Publication Results (784)

• The pathway to orthopaedic surgery: a population study of the role of access to primary care and availability of orthopaedic services in Ontario, Canada

  Canizares M, Davis AM, Badley EM. BMJ Open. 2014; 4:e004472. Epub 2014 Jul 31.

• Trends in colon cancer surgery in Ontario: 2002-2009

  Chan BP, Gomes T, Musselman RP, Auer RC, Moloo H, Mamdani M, Al-Omran M, Boushey RP, Alobeed O. Colorectal Dis. 2012; 14(10):e708-12. Epub 2012 Sep 11.

• Temporal trend of carpal tunnel release surgery: a population-based time series analysis

  Fnais N, Gomes T, Mahoney J, Alissa S, Mamdani M. PLoS One. 2014; 9(5):e97499. Epub 2014 May 14.

• Report on Coronary Artery Bypass Surgery in Ontario, Fiscal Years 2005/06 and 2006/07

  Spencer G, Wang J, Donovan L, Tu JV. July 2008

• Decreasing mortality for coronary artery bypass surgery in octogenarians

  Maganti M, Rao V, Brister S, Ivanov J. Can J Cardiol. 2009; 25(2):e32-5.

• Predictors of early and late stroke following cardiac surgery

  Whitlock R, Healey JS, Connolly SJ, Wang J, Danter MR, Tu JV, Novick R, Fremes S, Teoh K, Khera V, Yusuf S. CMAJ. 2014;186(12):905-11. Epub 2014 Jul 21.

• Risk of readmission and emergency surgery following nonoperative management of colonic diverticulitis: a population-based analysis

  Li D, de Mestral C, Baxter NN, McLeod RS, Moineddin R, Wilton AS, Nathens AB. Ann Surg. 2014; 260(3):423-31. Epub 2014 Sept 25.

• Cancer Surgery in Ontario: ICES Atlas

  Urbach DR, Simunovic M, Schultz SE, editors. December 2008.

• A qualitative assessment of a provincial quality improvement strategy for pancreatic cancer surgery

  Wright F, Fitch M, Coates AJ, Simunovic M. Ann Surg Oncol. 2011; 18(3):629-35. Epub 2010 Sep 28.

• Surveillance patterns after curative-intent colorectal cancer surgery in Ontario

  Tan J, Muir J, Coburn N, Singh S, Hodgson D, Saskin R, Kiss A, Paszat L, El-Sedfy A, Grunfeld E, Earle C, Law C. Can J Gastroenterol Hepatol. 2014; 28(8):427-33. Epub 2014 Jul 11.

• Rates and risk factors for prolonged opioid use after major surgery: population based cohort study

  Clarke H, Soneji N, Ko DT, Yun L, Wijeysundera DN. BMJ. 2014; 348:g1251. Epub 2014 Feb 11.

• A simple risk index for cardiac surgery

  Tu JV. Cardiol Rev. 1996; 13(2):23-6.

• Impact of ambulatory surgery day of the week on postoperative outcomes: a population-based cohort study

  McIsaac DI, Bryson GL, van Walraven C. Can J Anaesth. 2015; 62(8):857-65. Epub 2015 May 27.

• A population-based study of reoperations after back surgery

  Hu RW, Jaglal S, Axcell T, Anderson G. Spine. 1997; 22(19):2265-70.

• Cataract surgery quality and capacity

  Campbell RJ, Ten Hove MW, El-Defrawy SR, Hooper PL. Healthc Q. 2019; 22(1):6-10. Epub 2019 Apr 1. DOI: 10.12927/hcq.2019.25843.

• Surgery or consultation: a population-based cohort study of use of orthopaedic surgeon services

  Badley EM, Canizares M, MacKay C, Mahomed NN, Davis AM. PLoS One. 2013; 8(6):e65560.

• Timing of surgery and the risk of complications in patients with acute appendicitis: a population-level case-crossover study

  Patel SV, Groome PA, J Merchant S, Lajkosz K, Nanji S, Brogly SB. J Trauma Acute Care Surg. 2018; 85(2):341-7. Epub 2018 Aug 1.

• Cancer Surgery in Ontario

  Iscoe NA, To T, Gort EH, Tran M. April 1997

• Regional variation in surgery for gastroesophageal reflux disease in Ontario

  Lopushinsky SR, Austin PC, Rabeneck L, Kulkarni GS, Urbach DR. Surg Innov. 2007; 14(1):35-40.

• Projecting the growth of cataract surgery during the next 25 years

  Hatch WV, Campbell EL, Bell CM, El-Defrawy SR, Campbell RJ. Arch Ophthalmol. 2012; 130(11):1479-81.

• Timing of surgery and the risk of complications in patients with acute appendicitis: a population level case-crossover study

  Patel SV, Groome PA, Merchant S, Lajkosz K, Nanji S, Brogly SB. J Trauma Acute Care Surg. 2018; 85(2):341-7. Epub 2018 May 4.

• Cardiorenal outcomes in eligible patients referred for bariatric surgery

  Dash S, Everett K, Jackson T, Okrainec A, Urbach DR, Sockalingam S, Shah BR, Farkouh ME. Obesity (Silver Spring). 2021; 29(12):2035-43. Epub 2021 Nov 1. DOI: https://doi.org/10.1002/oby.23294

• The requirement for surgery and subsequent 30-day mortality rate in patients with COVID-19

  Welk B, Richard L, Rodriguez-Elizalde S. Can J Surg. 2021; 64(2):E246-8. Epub 2021 Apr 21. DOI: https://doi.org/10.1503/cjs.022020

• Outcomes in surgery for ovarian cancer

  Elit L, Bondy SJ, Paszat L, Przbysz R, Levine M. Gynecol Oncol. 2002; 87(3):260-7.

• Inpatient and Day Surgery Use by Children in Ontario

  To T, Guttmann A, Dick P. February 2001

• Coronary artery bypass graft surgery in Ontario and New York State: which rate is right?

  Tu JV, Naylor CD, Kumar D, Debuono BA, McNeil BJ, Hannan EL. Ann Intern Med. 1997; 126(1):13-9.

• Medical costs of delayed hip fracture surgery

  Pincus D, Wasserstein D, Ravi B, Huang A, Paterson JM, Jenkinson RJ, Kreder HJ, Nathens AB, Wodchis WP. J Bone Joint Surg Am. 2018; 100(16):1387-96. Epub 2018 Aug 15.

• Epilepsy risk following bariatric surgery for weight loss

  Antaya TC, Qureshi A, Richard L, Shariff SZ, Elnahas A, Burneo JG. Neurology. 2022; Sep 28 [Epub ahead of print]. DOI: https://doi.org/10.1212/WNL.0000000000201100

• Triage for coronary artery bypass graft surgery in Canada: do patients agree on who should come first?

  Shufelt K, Chong A, Alter DA. BMC Health Serv Res. 2007; 7:118.

• Non-invasive cardiac stress testing before elective major non-cardiac surgery: population based cohort study

  Wijeysundera DN, Beattie WS, Austin PC, Hux JE, Laupacis A. BMJ. 2010; 340:b5526.

• Long-term outcomes of hypofractionation versus conventional radiation therapy after breast-conserving surgery for ductal carcinoma in situ of the breast

  Lalani N, Paszat L, Sutradhar R, Thiruchelvam D, Nofech-Mozes S, Hanna W, Slodkowska E, Done SJ, Miller N, Youngson B, Tuck A, Sengupta S, Elavathil L, Chang MC, Jani PA, Bonin M, Rakovitch E. Int J Radiat Oncol Biol Phys. 2014; 90(5):1017-24. Epub 2014 Sep 11.

• Volume-outcome relationships for head and neck cancer surgery in a universal health care system

  Eskander A, Irish J, Groome PA, Freeman J, Gullane P, Gilbert R, Hall SF, Urbach DR, Goldstein DP. Laryngoscope. 2014(9):2081-8. Epub 2014 Apr 5.

• Preoperative testing prior to elective surgery

  Hux J. Healthc Q. 2003; 6(4):26-7.

• Head and Neck Cancer Surgery in Ontario, 2003‒2010: An ICES Atlas

  Eskander A, Irish JC, Urbach DR, Goldstein DP. November 2015

• Association of cataract surgery with traffic crashes

  Schlenker MB, Thiruchelvam D, Redelmeier DA. JAMA Ophthalmol. 2018; 136(9):998-1007. Epub 2018 Jun 28.

• Self-harm emergencies after bariatric surgery: a population-based cohort study

  Bhatti JA, Nathens AB, Thiruchelvam D, Grantcharov T, Goldstein BI, Redelmeier DA. JAMA Surg. 2016; 151(3):226-32. Epub 2015 Oct 7.

• Access to cancer surgery in a universal health care system during the COVID-19 pandemic

  Eskander A, Li Q, Hallet J, Coburn N, Hanna TP, Irish J, Sutradhar R. JAMA Netw Open. 2021; 4(3):e211104. Epub 2021 Mar 11. DOI: https://doi.org/10.1001/jamanetworkopen.2021.1104

• Healthcare system costs associated with surgery and medical therapy for children with drug-resistant epilepsy in Ontario

  Widjaja E, Demoe L, Yossofzai O, Guttmann A, Tomlinson G, Rutka J, Snead OC, Sander BH. Neurology. 2022; 98(12):e1204-15. Epub 2022 Feb 15. DOI: https://doi.org/10.1212/WNL.0000000000200026

• Association of overlapping surgery with increased risk for complications following hip surgery: a population-based, matched cohort study

  Ravi B, Pincus D, Wasserstein D, Govindarajan A, Huang A, Austin PC, Jenkinson R, Henry PDG, Paterson JM, Kreder HJ. JAMA Intern Med. 2018; 178(1):75-83. Epub 2017 Dec 4.

• Perioperative beta-blocker therapy in vascular surgery: clinical update

  Hackam DG. J Vasc Surg. 2006; 43(3):632-4.

• Analysis of deaths while waiting for cardiac surgery among 29,293 consecutive patients in Ontario, Canada

  Morgan CD, Sykora K, Naylor CD; the Steering Committee of the Cardiac Care Network of Ontario. Heart. 1998; 79(4):345-9.

• Surgery and the subtype of inflammatory bowel disease impact the risk of venous thromboembolism after hospital discharge

  McCurdy JD, Kuenzig ME, Spruin S, Fung OW, Mallik R, Williams L, Murthy SK, Carrier M, Nguyen G, Benchimol EI. Dig Dis Sci. 2021; 67(6):2471-9. Epub 2021 Jun 10. DOI: https://doi.org/10.1007/s10620-021-07064-5

• Risks of developing persistent opioid use after major surgery

  Soneji N, Clarke HA, Ko DT, Wijeysundera DN. JAMA Surg. 2016; 151(11):1083-4.

• Regionalization and outcomes of lung cancer surgery in Ontario, Canada

  Bendzsak AM, Baxter NN, Darling GE, Austin PC, Urbach DR. J Clin Oncol. 2017; 35(24):2772-80. Epub 2017 Jul 6.

• Troponin testing after non-cardiac surgery in Ontario: an observational study

  Azizi PM, Wijeysundera DN, Wijeysundera HC, Austin PC, Jerath A, Han L, Koh M, Ko DT. CJC Open. 2021; 3(7):904-12. Epub 2021 Mar 25. DOI: https://doi.org/10.1016/j.cjco.2021.03.002

• The effect of the Ontario Bariatric Network on health services utilization after bariatric surgery: a retrospective cohort study

  Elnahas A, Jackson TD, Okrainec A, Austin PC, Bell CM, Urbach DR. CMAJ Open. 2016; 4(3):E489-95.

• Bariatric center designation and outcomes following repeat abdominal surgery in bariatric patients

  Elnahas AI, Reid JN, Lam M, Doumouras AG, Anvari M, Schlachta CM, Alkhamesi NA, Hawel JD, Urbach DR. J Surg Res. 2022; 280:421-8. Epub 2022 Aug 27. DOI: https://doi.org/10.1016/j.jss.2022.07.032

• Propensity-score matching in the cardiovascular surgery literature from 2004 to 2006: a systematic review and suggestions for improvement

  Austin PC. J Thoract Cardiovasc Surg. 2007; 134(5):1128-35.

• Elective, major noncardiac surgery on the weekend: a population-based cohort study of 30-day mortality

  McIsaac DI, Bryson GL, van Walraven C. Med Care. 2014; 52(6):557-64.

• Waiting for coronary artery bypass surgery: population-based study of 8517 consecutive patients in Ontario, Canada

  Naylor CD, Sykora K, Jaglal SB, Jefferson S. Lancet. 1995; 346(8990):1605-9.

• Delirium after elective surgery among elderly patients taking statins

  Redelmeier DA, Thiruchelvam D, Daneman N. CMAJ. 2008; 179(7):645-52.

• Disparities in surgery among patients with intractable epilepsy in a universal health system

  Burneo JG, Shariff SZ, Liu K, Leonard S, Saposnik G, Garg AX. Neurology. 2016; 86(1):72-8. Epub 2015 Dec 7.

• Variation in the practice of preoperative medical consultation for major elective noncardiac surgery: a population-based study

  Wijeysundera DN, Austin PC, Beattie WS, Hux JE, Laupacis A. Anesthesiology. 2012; 116(1):25-34.

• Secular trends in acute dialysis after elective major surgery — 1995 to 2009

  Siddiqui NF, Coca SG, Devereaux PJ, Jain AK, Li L, Luo J, Parikh CR, Paterson M, Philbrook HT, Wald R, Walsh M, Whitlock R, Garg AX. CMAJ. 2012; 184(11):1237-45. Epub 2012 Jun 25.

• Complications following surgery with or without radiotherapy or radiotherapy alone for prostate cancer

  Wallis CJ, Cheung P, Herschorn S, Saskin R, Su J, Klotz LH, Kulkarni GS, Lee Y, Kodama RT, Narod SA, Nam RK. Br J Cancer. 2015; 112(6):977-82. Epub 2015 Feb 17.

• Emergency department use and hospital admission in children following ambulatory surgery: a retrospective population-based cohort study

  Sawhney M, VanDenKerkhof EG, Goldstein DH, Wei X, Pare G, Mayne I, Tranmer J. BMJ Paediatr Open. 2021; 5(1):e001188. Epub 2021 Nov 23. DOI: https://doi.org/10.1136/bmjpo-2021-001188

• Access to bariatric surgery among older patients in a publicly funded regionalized care system

  Elnahas AI, Doumouras AG, Anvari M, Schlachta CM, McClure A, Alkhamesi NA, Hawel JD, Urbach DR. Surg Endosc. 2021; 35(12):6990-7. Epub 2021 Jan 4. DOI: https://doi.org/10.1007/s00464-020-08212-0

• Troponin testing after noncardiac surgery: a population-based historical cohort study on variation and factors associated with testing in Ontario

  Azizi PM, Wijeysundera DN, Wijeysundera HC, Austin PC, Jerath A, Han L, Koh M, Ko DT. Can J Anaesth. 2022; 69(5):572-81. Epub 2022 Apr 7. DOI: https://doi.org/10.1007/s12630-022-02219-y

• Utilization and outcomes for spine surgery in the United States and Canada

  Cram P, Landon BE, Matelski J, Ling V, Perruccio AV, Paterson JM, Rampersaud YR. Spine. 2019; 44(19):1371-80. Epub 2019 Jun 27. DOI: https://doi.org/10.1097/BRS.0000000000003083

• Long-term impact of bariatric surgery on glycemic control and glucose-lowering therapy for people with type 2 diabetes: population-based cohort study

  Imtiaz R, Doumouras AG, Hong D, Anvari M, Shah BR. Surg Obes Relat Dis. 2021; 17(6):1049-56. Epub 2021 Feb 17. DOI: https://doi.org/10.1016/j.soard.2021.02.015

• Socioeconomic status and surgery in children: myringotomies and tonsillectomies in Ontario, Canada, 1996-2000

  Croxford R, Friedberg J, Coyte PC. Acta Paediatrica. 2004; 93(9):1245-50.

• Changing trends in rectal cancer surgery in Ontario: 2002–2009

  Musselman RP, Gomes T, Chan BP, Auer RC, Moloo H, Mamdani M, Al-Omran M, Al-Obeed O, Boushey RP. Colorectal Dis. 2012; 14(12):1467-72. Epub 2012 Nov 15.

• Association of duration of surgery with postoperative delirium among patients receiving hip fracture repair

  Ravi B, Pincus D, Choi S, Jenkinson R, Wasserstein DN, Redelmeier DA. JAMA Netw Open. 2019; 2(2):e190111. Epub 2019 Feb 22.

• Symptom assessment following surgery for lung cancer: a Canadian population-based retrospective cohort study

  Hirpara DH, Coburn N, Darling G, Kidane B, Rousseau M, Gupta V, Doherty M, Zuk V, Delibasic V, Chan W, Hallet J. Ann Surg. 2021 Feb 10 [Epub ahead of print]. DOI: https://doi.org/10.1097/SLA.0000000000004802

• Regional variation in the use of surgery in Ontario

  Feinberg AE, Porter J, Saskin R, Rangrej J, Urbach DR. CMAJ Open. 2015; 3(3):E310-6.

• Disability-free survival after major cardiac surgery: a population-based retrospective cohort study

  Sun LY, Eddeen AB, Mesana TG. CMAJ Open. 2021; 9(2):E384-93. Epub 2021 Apr 16. DOI: https://doi.org/10.9778/cmajo.20200096

• Association between day of the week of elective surgery and postoperative mortality

  Dubois L, Vogt K, Vinden C, Winick-Ng J, McClure JA, Roshanov PS, Bell CM, Garg AX; Surgical Investigators Group at ICES Western. CMAJ. 2017; 189(8):E303-9. Epub 2016 Oct 17.

• Outcomes after coronary artery bypass graft surgery in Canada: 1992/93 to 2000/01

  Ghali WA, Quan H, Shrive FM, Hirsch GM; Canadian Cardiovascular Outcomes Research Team. Can J Cardiol. 2003; 19(7):774-81.

• Medical use of cocaine and perioperative morbidity following sinonasal surgery—a population study

  MacNeil SD, Rotenberg B, Sowerby L, Allen B, Richard L, Shariff SZ. PLoS One. 2020; 15(7):e0236356. Epub 2020 Jul 30. DOI: https://doi.org/10.1371/journal.pone.0236356

• Association between bariatric surgery and all-cause mortality: a population-based matched cohort study in a universal health care system

  Doumouras AG, Hong D, Lee Y, Tarride J, Paterson JM, Anvari M. Ann Intern Med. 2020; 173(9):694-703. Epub 2020 Aug 18. DOI: https://doi.org/10.7326/M19-3925

• Long-term follow-up of endometriosis surgery in Ontario: a population-based cohort study

  Bougie O, McClintock C, Pudwell J, Brogly SB, Velez MP. Am J Obstet Gynecol. 2021; 225(3):270.e1-e19. Epub 2021 Apr 21. DOI: https://doi.org/10.1016/j.ajog.2021.04.237

• Reporting and evaluating wait times for urgent hip fracture surgery in Ontario, Canada

  Pincus D, Wasserstein D, Ravi B, Byrne JP, Huang A, Paterson JM, Nathens AB, Kreder HJ, Jenkinson RJ, Wodchis WP. CMAJ. 2018; 190(23):E702-9. Epub 2018 Jun 11.

• Predicting 1-year mortality after cardiac surgery complicated by prolonged critical illness: derivation and validation of a population-based risk model

  McDonald B, van Walraven C, McIsaac DI. J Cardiothorac Vasc. 2020; 34(10):2628-37. Epub 2020 May 15. DOI: https://doi.org/10.1053/j.jvca.2020.04.052

• Does the presence of an intact primary increase the risk of non‐elective colorectal surgery in patients treated with Bevacizumab

  Baxter NN, Sutradhar R, Dossa F, Fu L, Rochon P, Wei AC, Kennedy ED, Earle CC. Colorectal Dis. 2020; 22(12):1974-83. Epub 2020 Aug 7. DOI: https://doi.org/10.1111/codi.15294

• Bariatric surgery and cardiovascular outcomes in patients with obesity and cardiovascular disease: a population-based retrospective cohort study

  Doumouras AG, Wong JA, Paterson JM, Lee Y, Sivapathasundaram B, Tarride J, Thabane L, Hong D, Yusuf S, Anvari M. Circulation. 2021; 143(15):1468-80. Epub Apr 5. DOI: https://doi.org/10.1161/CIRCULATIONAHA.120.052386

• Trends in pulmonary function testing before noncardiothoracic surgery

  Sun LY, Gershon AS, Ko DT, Thilen SR, Yun L, Beattie WS, Wijeysundera DN. JAMA Intern Med. 2015; 175(8):1410-2. Epub 2015 Jun 8.

• Long-term analgesic use after low-risk surgery: a retrospective cohort study

  Alam A, Gomes T, Zheng H, Mamdani MM, Juurlink DN, Bell CM. Arch Intern Med. 2012; 172(5):425-30.

• Are the marginal returns of coronary artery surgery smaller in high-rate areas?

  Hux JE, Naylor CD. Lancet. 1996; 348(9036):1202-7.

• The effect of surgery type on survival and recurrence in very young women with breast cancer

  Quan ML, Paszat LF, Fernandes KA, Sutradhar R, McCready DR, Rakovitch E, Warner E, Wright FC, Hodgson N, Brackstone M, Baxter NN. J Surg Oncol. 2017; 115(2):122-30.

• Time to surgery for patients with esophageal cancer undergoing trimodal therapy in Ontario: a population-based cross-sectional study

  Hanna NM, Nguyen P, Chung W, Groome PA. Curr Oncol. 2022, 29(8):5901-18. Epub 2022 Aug 20. DOI: https://doi.org/10.3390/curroncol29080466

• Incidence of persistent postoperative opioid use in patients undergoing ambulatory surgery: a retrospective cohort study

  Hamilton GM, Ladha K, Wheeler K, Nguyen F, McCartney CJL, McIsaac DI. Anaesthesia. 2022; Oct 31 [Epub ahead of print]. DOI: https://doi.org/10.1111/anae.15900

• Population-level trends in emergency general surgery presentations and mortality over time

  Nantais J, Baxter NN, Saskin R, Logsetty S, Gomez D. Br J Surg. 2023; Mar 4 [Epub ahead of print]. DOI: https://doi.org/10.1093/bjs/znad041

• Short term outcomes of endometriosis surgery in Ontario: a population‐based cohort study

  Bougie O, McClintock C, Pudwell J, Brogly SB, Velez MP. Acta Obstet Gynecol Scand. 2021; 100(6):1140-7. Epub 2020 Dec 27. DOI: https://doi.org/10.1111/aogs.14071

• Association between bariatric surgery and major adverse diabetes outcomes in patients with diabetes and obesity

  Doumouras AG, Lee Y, Paterson JM, Gerstein HC, Shah BR, Sivapathasundaram B, Tarride J, Anvari M, Hong D. JAMA Netw Open. 2021; 4(4):e216820. Epub 2021 Apr 26. DOI: https://doi.org/10.1001/jamanetworkopen.2021.6820

• Higher in-hospital mortality in female patients following coronary artery bypass surgery: a population-based study

  Jaglal SB, Tu JV, Naylor CD. Clin Invest Med. 1995; 18(2):99-107.

• A 10-year population-based cohort analysis of cataract surgery rates in Ontario

  Hatch WV, Cernat G, Singer S, Bell CM. Can J Ophthalmol. 2007; 42(4):552-6.

• A population-based study of surgery for spinal metastases. Survival rates and complications

  Finkelstein JA, Zaveri G, Wai E, Vidmar M, Kreder H, Chow E. J Bone Joint Surg Br. 2003; 85(7):1045-50.

• The effect of hospital type and surgical delay on mortality after surgery for hip fracture

  Weller I, Wai EK, Jaglal S, Kreder HJ. J Bone Joint Surg Br. 2005; 87(3):361-6.

• A population-based study of complications after colorectal surgery in patients who have received Bevacizumab

  Baxter NN, Fischer HD, Richardson DP, Urbach DR, Bell CM, Rochon P, Brade A, Earle CC. Dis Colon Rectum. 2018; 61(3):306-13.

• Long-term survival and resource use in critically ill cardiac surgery patients: a population-based study

  McIsaac DI, McDonald B, Wong CA, van Walraven C. Can J Anaesth. 2018; 65(9):985-95. Epub 2018 Jun 1.

• Laparoscopic colorectal surgery in the emergency setting: trends in the province of Ontario

  Musselman RP, Gomes T, Chan BP, Auer RC, Moloo H, Mamdani M, Al-Omran M, Al-Obeed O, Boushey RP. Surg Laparosc Endosc Percutan Tech. 2015; 25(5):430-5. Epub 2015 Mar 19.

• A population-based study evaluating the association between surgery in early life and child development at primary school entry

  O'Leary JD, Janus M, Duku E, Wijeysundera DN, To T, Li P, Maynes JT, Crawford MW. Anesthesiology. 2016; 125(2):272-9. Epub 2016 Aug 1.

• Teaching surgery takes time: the impact of surgical education on time in the operating room

  Vinden C, Malthaner R, McGee J, McClure JA, Winick-Ng J, Liu K, Nash DM, Welk B, Dubois L. Can J Surg. 2016; 59(2):87-92. Epub 2016 Mar 30.

• Bariatric surgery and breast cancer incidence: a population-based, matched cohort study

  Doumouras AG, Lovrics O, Paterson JM, Sutradhar R, Paszat L, Sivapathasundaram B, Tarride J, Anvari M. Obes Surg. 2022; 32(4):1261-9. Epub 2022 Feb 25. DOI: https://doi.org/10.1007/s11695-022-05946-9

• Epilepsy surgery in adult stroke survivors with new-onset drug-resistant epilepsy

  Antaya TC, Le BN, Richard L, Qureshi A, Shariff SZ, Sposato LA, Burneo JG. Can J Neurol Sci. 2022; Nov 14 [Epub ahead of print]. DOI: https://doi.org/10.1017/cjn.2022.300

• Surgeon volumes and selected patient outcomes in cataract surgery

  Bell CM, Hatch WV, Cernat G, Urbach DR. Ophthalmology. 2007; 114(3):405-10. Epub 2006 Dec 14.

• A longitudinal analysis of wait times for bariatric surgery in a publicly funded, regionalized bariatric care system

  Doumouras AG, Albacete S, Mann A, Gmora S, Anvari M, Hong D. Obes Surg. 2020; 30(3):961-8. Epub 2019 Nov 8. DOI: https://doi.org/10.1007/s11695-019-04259-8

• Surgery for diverticular disease results in a higher hernia rate compared to colorectal cancer: a population-based study from Ontario, Canada

  Tang ES, Robertson DI, Whitehead M, Xu J, Hall SF. Hernia. 2018; 22(4):603-9. Epub 2017 Nov 16.

• Predictors of postoperative complications in vestibular schwannoma surgery-a population-based study

  Alkins RD, Newsted D, Nguyen P, Campbell RJ, Beyea JA. Otol Neurotol. 2021; 42(7):1067-73. Epub 2021 Mar 5. DOI: https://doi.org/10.1097/MAO.0000000000003107

• Weight loss surgery and subsequent emergency care use: a population-based cohort study

  Bhatti JA, Nathens AB, Thiruchelvam D, Redelmeier DA. Am J Emerg Med. 2016; 34(5):861-5. Epub 2016 Feb 12.

• Patient-reported symptom burden after cancer surgery in older adults: a population-level analysis

  Hallet J, Zuckerman J, Guttman MP, Chesney TR, Haas B, Mahar A, Eskander A, Chan WC, Hsu A, Barabash V, Coburn N; for the REcovery after Surgical Therapy for Older Adults Research-Cancer (RESTORE-C) Group. Ann Surg Oncol. 2022; Sep 6 [Epub ahead of print]. DOI: https://doi.org/10.1245/s10434-022-12486-0

• Association between frailty and time alive and at home after cancer surgery among older adults: a population-based analysis

  Hallet J, Tillman B, Zuckerman J, Guttman MP, Chesney T, Mahar AL, Chan WC, Coburn N, Haas B; members of the Recovery after Surgical Therapy for Older adults Research–Cancer (RESTORE-Cancer) Group. J Natl Compr Canc Netw. 2022; 20(11):1223-32.e8. Epub 2022 Nov 1. DOI: https://doi.org/10.6004/jnccn.2022.7052

• Surgical volume and long-term survival following surgery for colorectal cancer in the Veterans Affairs Health-Care System

  Rabeneck L, Davila JA, Thompson M, El-Serag HB. Am J Gastroenterol. 2004; 99(4):668-75.

• Risk factors for acute endophthalmitis after cataract surgery: a population-based study

  Hatch WV, Cernat G, Wong D, Devenyi R, Bell CM. Ophthalmology. 2009; 116(3):425-30. Epub 2008 Dec 16.

• Risk of elective major noncardiac surgery after coronary stent insertion: a population-based study

  Wijeysundera DN, Wijeysundera HC, Yun L, Wąsowicz M, Beattie SW, Velianou JL, Ko DT. Circulation. 2012; 126(11):1355-62. Epub 2012 Aug 14.

• A clinical risk scoring tool to predict readmission after cardiac surgery: an Ontario administrative and clinical population database study

  Tam DY, Fang J, Tran A, Tu JV, Ko DT, Deb S, Fremes SE. Can J Cardiol. 2018; 34(12):1655-64. Epub 2018 Sep 21.

• Severe nutritional complications after bariatric surgery in Ontario adults: a population-based descriptive study

  Bielawska B, Ouellette-Kuntz H, Patel SV, Anvari M, Zevin B. Surg Obes Relat Dis. 2020; 16(11):1784-93. Epub 2020 Jun 27. DOI: https://doi.org/10.1016/j.soard.2020.06.028

• Rates, predictive factors, and adverse outcomes of fusion surgery for lumbar degenerative disorders in Ontario, Canada between 2006 and 2015: a retrospective cohort study

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• Outcomes in elderly patients following surgery for colorectal cancer in the veterans affairs health care system

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• Thromboembolic prophylaxis in moderate-risk patients undergoing elective abdominal surgery: decision and cost-effectiveness analyses

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• The improving outcomes of coronary artery bypass graft surgery in Ontario, 1981 to 1995

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• Physician and population determinants of rates of middle-ear surgery in Ontario

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• Hospital volume, length of stay, and readmission rates in high-risk surgery

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• Recurrence and mortality after breast-conserving surgery without radiation

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• Statin use and the risk of surgical site infections in elderly patients undergoing elective surgery

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• Assessing the outcomes of coronary artery bypass graft surgery: how many risk factors are enough?

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• Long-term dependency outcomes in older adults following hepato-pancreato-biliary surgery for cancer

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• Queueing for coronary surgery during severe supply-demand mismatch in a Canadian referral centre: a case study of implicit rationing

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• Incidence of ESKD and mortality among children with congenital heart disease after cardiac surgery

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• Socioeconomic status and days alive and out of hospital after major elective noncardiac surgery: a population-based cohort study

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• Alive and at home: five-year outcomes in older adults following emergency general surgery

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• Association of frailty with long-term homecare utilization in older adults following cancer surgery: retrospective population-based cohort study

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• The time-varying effect of radiotherapy after breast-conserving surgery for DCIS

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• Chronic opioid use after joint replacement surgery in seniors is associated with increased healthcare utilization and costs: a historical cohort study

  Johnson A, Milne B, Jamali N, Pasquali M, Gilron I, Mann S, Moore K, Graves E, Parlow J. Can J Anaesth. 2022; 69(8):963-73. Epub 2022 Mar 22. DOI: https://doi.org/10.1007/s12630-022-02240-1

• Outcomes of after-hours hip fracture surgery

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• Epidural anaesthesia and survival after intermediate-to-high risk non-cardiac surgery: a population-based cohort study

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• Urinary tract infections, urologic surgery, and renal dysfunction in a contemporary cohort of traumatic spinal cord injured patients

  Welk B, Lui K, Winick-Ng J, Shariff SZ. Neurourol Urodyn. 2017; 36(3):640-7. Epub 2016 Feb 29.

• Impact of South Asian ethnicity on long-term outcomes after coronary artery bypass grafting surgery: a large population-based propensity matched study

  Deb S, Tu JV, Austin PC, Ko DT, Rocha R, Mazer CD, Kiss A, Fremes SE. J Am Heart Assoc. 2016; 5(7):e003941.

• Health care costs for the evaluation, surgery, and follow-up care of living kidney donors

  Habbous S, Sarma S, Barnieh L, McArthur E, Klarenbach S, Manns B, Begen MA, Lentine KL, Garg AX; Donor Nephrectomy Outcomes Research (DONOR) Network. Transplantation. 2018; 102(8):1367-74. Epub 2018 Apr 19.

• A population-based nested case-control study of the costs of hip and knee replacement surgery

  Hawker GA, Badley EM, Croxford R, Coyte PC, Glazier RH, Guan J, Harvey BJ, Williams JI, Wright JG. Med Care. 2009; 47(7):732-41.

• Use of coronary artery bypass surgery in the United States and Canada. Influence of age and income

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• Uptake and survival effects of minimally invasive surgery for lung cancer: a population-based study

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• Case selection and appropriateness of coronary angiography and coronary artery bypass graft surgery in British Columbia and Ontario

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• Surgery for adhesive small bowel obstruction is associated with improved long-term survival mediated through recurrence prevention: a population-based, propensity-matched analysis

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• Non-opioid analgesic prescriptions filled after surgery among older adults in Ontario, Canada: a population-based cohort study

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• November 2012

  • Increased OxyContin dispensing in Canada after U.S. launch of tamper-resistant formulation
  • Study examines appropriate use of angioplasty and bypass surgery in Ontario
  • Prostate removal linked to a 5% risk of subsequent urinary incontinence surgery
  • Most seniors on warfarin therapy for atrial fibrillation stop treatment within five years
  • Cataract surgery in Ontario expected to double by 2036

• Multicenter validation of a risk index for mortality, intensive care unit stay, and overall hospital length of stay after cardiac surgery

  Tu JV, Jaglal SB, Naylor CD. Circulation. 1995; 91(3):677-84.

• Uptake and patient outcomes of laparoscopic colon and rectal cancer surgery in a publicly funded system and following financial incentives

  Simunovic M, Baxter NN, Sutradhar R, Liu N, Cadeddu M, Urbach D. Ann Surg Oncol. 2013; 20(12):3740-6. Epub 2013 Jul 13.

• March 2014

  • Study finds girls with mental illness three times more likely to become pregnant
  • Educational toolkit fails to improve quality of care in patients with diabetes
  • Study identifies additional features of sleep apnea that predict cardiovascular events
  • Number of Ontario patients with rheumatoid arthritis more than doubled in 15 years
  • About 3% of patients not on painkillers before surgery still using them 90 days after surgery

• November 2005

  • Short-acting beta-blockers associated with less cardiac protection for surgery patients
  • Outcomes improving for colorectal cancer surgery patients
  • Social policy changes should better evaluate potential health effects
  • Breast cancer screening less likely in women with diabetes
  • Newer atypical antispychotics can also cause parkinsonism

• December 2008

  • Hernia surgery wait times increase risk for infants and young children
  • Universal access to chicken pox vaccine reduces burden on Ontario’s health care system
  • Increasing access to antiplatelet drug improves cardiovascular outcomes
  • Study finds significant regional variation in rates of diagnostic imaging across Ontario
  • New cancer surgery atlas maps variations in patterns of care in Ontario

• November 2013

  • Mortality from all causes decreased 72% among Ontario adults living with HIV
  • Surgeons with modest sleep deprivation do not have more complications during surgery
  • Antidepressant linked to small increased risk of blood transfusion during surgery
  • Coprescribed hypertension drug and antibiotic linked to small increased risk of kidney injury
  • Toronto's homeless have much higher rates of ED and hospital use than general population

• Surgical outcomes in women with ovarian cancer

  Elit LM, Bondy SJ, Paszat LP, Holowaty EJ, Thomas GM, Stukel TA, Levine MN. Can J Surg. 2008; 51(5):346-54.

• Postoperative health-care utilization in Crohn's disease: the impact of specialist care

  Nguyen GC, Saibil F, Steinhart AH, Li Q, Tinmouth JM. Am J Gastroenterol. 2012; 107(10):1522-9. Epub 2012 Jul 31.

• Patterns of care after magnetic resonance imaging of the spine in primary care

  You JJ, Bederman SS, Symons S, Bell CM, Yun L, Laupacis A, Rampersaud YR. Spine (Phila Pa 1976). 2013; 38(1):51-9.

• Association between tamsulosin and serious ophthalmic adverse events in older men following cataract surgery

  Bell CM, Hatch WV, Fischer HD, Cernat G, Paterson JM, Gruneir A, Gill SS, Bronskill SE, Anderson GM, Rochon PA. JAMA. 2009; 301(19):1991-6.

• A retrospective assessment of prognostication in 456,685 patients undergoing elective major non-cardiac surgery

  McIsaac D, Lavallée LT, van Walraven C. Can J Anaesth. 2017; 64(9):908-18. Epub 2017 Jul 5.

• Salvage abdominoperineal resection for anal squamous cell carcinoma: use, risk factors, and outcomes in a Canadian population

  Patel SV, Ko G, Raphael MJ, Booth CM, Brogly SB, Kalyvas M, Li W, Hanna T. Dis Colon Rectum. 2020; 63(6):748-57. Epub 2020 Mar 6. DOI: https://doi.org/10.1097/DCR.0000000000001630

• Initial treatment is associated with improved survival and end-of-life outcomes for patients with pancreatic cancer: a cohort study

  Khan R, Salim M, Tanuseputro P, Hsu AT, Coburn N, Hallet J, Talarico R, James PD. BMC Cancer. 2022; 22(1):1312. Epub 2022 Dec 14. DOI: https://doi.org/10.1186/s12885-022-10342-8

• Administrative hospitalization database validation of cardiac procedure codes

  Lee DS, Stitt A, Wang X, Yu JS, Gurevich Y, Kingsbury KJ, Austin PC, Tu JV. Med Care. 2013; 51(4):e22-6.

• The impact of surgeon volume on postoperative outcomes after surgery for Crohn’s disease

  Nguyen GC, Steinhart AH. Inflamm Bowel Dis. 2014; 20(2):301-6. Epub 2013 Dec 26.

• Preoperative anesthesiology consult utilization in Ontario - a population-based study

  Dion JMM, Campbell RJ, Nguyen P, Beyea JA. J Eval Clin Pract. 2022; 28(1):151-8. Epub 2021 Jun 30. DOI: https://doi.org/10.1111/jep.13595

• Cancer patients first treated with chemotherapy: Are they more likely to receive surgery in the pandemic?

  Fu R, Sutradhar R, Dare A, Li Q, Hanna TP, Chan KKW, Irish JC, Coburn N, Hallet J, Singh S, Parmar A, Earle CC, Lapointe-Shaw L, Krzyzanowska MK, Finelli A, Louie AV, Witterick JJ, Mahar A, Urbach DR, McIsaac DI, Enepekides D, Look Hong NJ, Eskander A. Curr Oncol. 2022; 29(10):7732-44. Epub 2022 Oct 14. DOI: https://doi.org/10.3390/curroncol29100611

• Repeat surgical intervention for stress urinary incontinence after a failed mid urethral sling

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• Urgency of carotid endarterectomy for secondary stroke prevention: results from the Registry of the Canadian Stroke Network

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• Association of atrial fibrillation and oral anticoagulant use with perioperative outcomes after major noncardiac surgery

  Ge Y, Ha ACT, Atzema CL, Abdel-Qadir HM, Fang J, Austin PC, Wijeysundera DN, Lee DS. J Am Heart Assoc. 2017; 6(12):e006022. Epub 2017 Dec 12.

• Long-term risk of hypertension after surgical repair of congenital heart disease in children

  Greenberg JH, McArthur E, Thiessen-Philbrook H, Zappitelli M, Wald R, Kaushal S, Ng DK, Everett AD, Chanchlani R, Garg AX, Parikh CR. JAMA Netw Open. 2021;4(4):e215237. Epub 2021 Apr 8. DOI: https://doi.org/10.1001/jamanetworkopen.2021.5237

• A population-based analysis of long-term outcomes among older adults requiring unexpected intensive care unit admission after cancer surgery

  Tillmann BW, Hallet J, Guttman MP, Coburn N, Chesney T, Zuckerman J, Mahar A, Zuk V, Chanv WC, Haas B; REcovery after Surgical Therapy for Older adults Research—Cancer (RESTORE-C) group. Ann Surg Oncol. 2021; 28(12):7014-24. Epub 2021 Aug 24. DOI: https://doi.org/10.1245/s10434-021-10705-8

• Opioid use after nephrectomy for kidney cancer in Ontario: a population-based study

  Cheung DC, Martin LJ, Jivraj NK, Clarke H, Gomes T, Wijeysundera DN, Diong C, Nayan M, Saarela O, Alibhai SMH, Komisarenko M, Fleshner NE, Kulkarni GS, Finelli A. Urology. 2022; 164:118-23. Epub 2022 Feb 16. DOI: https://doi.org/10.1016/j.urology.2022.02.002

• Access to Health Services in Ontario: ICES Atlas. 2nd Edition

  Tu JV, Pinfold SP, McColgan P, Laupacis A, editors. May 2006

• November 2015

  • Regular physician visits improve uptake of mammograms as women age
  • Increased risk of suicide after bariatric surgery indicates need for patient screening
  • One in 30 Ontario women require vaginal mesh revision or removal surgery after treatment for stress urinary incontinence
  • Residents of for-profit long-term care homes have higher hospitalization and mortality rates than residents of not-for-profit facilities
  • Women with intellectual and developmental disabilities have more labour inductions and caesarean sections

• A patient-centered approach to wait times in the surgical management of breast cancer in the province of Ontario

  Cordeiro E, Dixon M, Coburn N, Holloway CM. Ann Surg Oncol. 2015; 22(8):2509-16. Epub 2015 Jan 7.

• Defining the pathway to definitive care and surgical decompression after traumatic spinal cord injury: results of a Canadian population-based cohort study

  Wilson JR, Voth J, Singh A, Middleton J, Jaglal S, Singh JM, Mainprize TG, Yee A, Fehlings M. J Neurotrauma. 2016; 33(10):963-71. Epub 2015 Dec 9.

• Population‐based study of the impact of surgical and adjuvant therapy at the same or a different institution on survival of patients with pancreatic adenocarcinoma

  Latchana N, Davis L, Coburn NG, Mahar A, Liu Y, Hammad A, Kagedan D, Elmi M, Siddiqui M, Earle CC, Hallet J. BJS Open. 2018; 3(1):85-94. Epub 2018 Dec 5.

• Readmission rates following esophageal cancer resection are similar at regionalized and non-regionalized centers: a population-based cohort study

  Gupta V, Bubis L, Kidane B, Mahar AL, Ringash J, Sutradhar R, Darling GE, Coburn NG. J Thorac Cardiovasc Surg. 2019; 158(3):934-42.e2. Epub 2019 May 3. DOI: https://doi.org/10.1016/j.jtcvs.2019.04.061

• Impact of postoperative intensive care unit utilization on postoperative outcomes in adults undergoing major elective noncardiac surgery

  Jerath A, Austin PC, McCormack D, Wijeysundera DN. J Clin Anesth. 2020; 62:109707. Epub 2020 Jan 14. DOI: https://doi.org/10.1016/j.jclinane.2020.109707

• Pain and haemorrhage are the most common reasons for emergency department use and hospital admission in adults following ambulatory surgery: results of a population-based cohort study

  Sawhney M, Goldstein DH, Wei X, Pare GC, Wang L, VanDenKerkhof EG. Perioper Med (Lond). 2020; 9:25. Epub 2020 Aug 19. DOI: https://doi.org/10.1186/s13741-020-00155-3

• Disparities in deep brain stimulation use for Parkinson’s Disease in Ontario Canada

  Crispo JAG, Lam M, Le B, Richard L, Shariff SZ, Ansell DR, Squarzolo M, Marras C, Willis AW, Seitz D. Can J Neurol Sci. 2020; 47(5):642-55. Epub 2020 Apr 24. DOI: https://doi.org/10.1017/cjn.2020.79

• Derivation and validation of a clinical risk score to predict death among patients awaiting cardiac surgery in Ontario, Canada: a population-based study

  Sun LY, Wijeysundera HC, Lee DS, van Diepen S, Ruel M, Eddeen AB, Mesana TG. CMAJ Open. 2022; 10(1):E173-82. Epub 2022 Mar 8. DOI: https://doi.org/10.9778/cmajo.20210031

• Association of frailty with days alive at home in critically ill patients undergoing emergency general surgery: a population-based cohort study

  Alkadri J, Aucoin SD, McDonald B, Grubic N, McIsaac DI. Br J Anaesth. 2022; 129(4):536-43. Epub 2022 Aug 28. DOI: https://doi.org/10.1016/j.bja.2022.07.013

• Coronary bypass mortality rates in Ontario: a Canadian approach to quality assurance in cardiac surgery

  Tu JV, Naylor CD. Circulation. 1996; 94(10):2429-33.

• Waiting times for radiation therapy in Ontario

  Benk V, Przybysz R, McGowan T, Paszat L. Can J Surg. 2006; 49(1):16-21.

• Trends over time in the use of laparoscopic hysterectomy for the treatment of endometrial cancer

  Kroft J, Li Q, Saskin R, Elit L, Bernardini MQ, Gien LT. Gynecol Oncol. 2015; 138(3):536-41. Epub 2015 Jul 11.

• A patient-centred approach toward surgical wait times for colon cancer: a population-based analysis

  Gillis A, Dixon M, Smith A, Law C, Coburn NG. Can J Surg. 2014; 57(2):94-100.

• Reducing repeat imaging in hepato-pancreatico-biliary surgical cancer care through shared diagnostic imaging repositories

  Hallet J, Coburn NG, Alberga A, Fu L, Tharmalingam S, Beyfuss K, Milot L, Law CHL. HPB (Oxford). 2019; 21(1):96-106. Epub 2018 Oct 5.

• The longterm impact of early intensive treatment of seniors with rheumatoid arthritis: a comparison of 2 population-based cohort studies on time to joint replacement surgery

  Widdifield J, Moura CS, Wang Y, Abrahamowicz M, Paterson JM, Huang A, Beauchamp ME, Boire G, Fortin PR, Bessette L, Bombardier C, Hanly JG, Feldman D, Bernatsky S; Canadian Network for Advanced Interdisciplinary Methods for Comparative Effectiveness Research (CAN-AIM). J Rheumatol. 2016; 43(5):861-8. Epub 2016 Feb 15.

• Strabismus surgical subspecialization: a population-based analysis

  Campbell RJ, Gill SS, Ten Hove M, El-Defrawy SR, Strube YN, Whitehead M, Campbell EL, Bell CM. JAMA Ophthalmol. 2015; 133(5):555-9. Epub 2015 Feb 26.

• Delayed discharge after major surgical procedures in Ontario, Canada: a population-based cohort study

  Jerath A, Sutherland J, Austin PC, Ko DT, Wijeysundera HC, Fremes S, Karanicolas P, McCormack D, Wijeysundera DN. CMAJ. 2020; 192(46):E1440-52. Epub 2020 Nov 16. DOI: https://doi.org/10.1503/cmaj.200068

• Results from the TRIBE-AKI Study found associations between post-operative blood biomarkers and risk of chronic kidney disease after cardiac surgery

  Menez S, Moledina DG, Garg AX, Thiessen-Philbrook H, McArthur E, Jia Y, Liu C, Obeid W, Mansour SG, Koyner JL, Shlipak MG, Wilson FP, Coca SG, Parikh CR. Kidney Int. 2021; 99(3):716-24. Epub 2020 Jul 25. DOI: https://doi.org/10.1016/j.kint.2020.06.037

• Derivation and validation of a clinical model to predict death or cardiac hospitalizations while on the cardiac surgery waitlist

  Sun LY, Eddeen AB, Wijeysundera HC, Mamas MA, Tam DY, Mesana TG. CMAJ. 2021; 193(34):E1333-40. Epub 2021 Aug 30. DOI: https://doi.org/10.1503/cmaj.210170

• Urine alpha-1-microglobulin levels and acute kidney injury, mortality, and cardiovascular events following cardiac surgery

  Amatruda JG, Estrella MM, Garg AX, Thiessen-Philbrook H, McArthur E, Coca SG, Parikh CR, Shlipak MG; TRIBE-AKI Consortium. Am J Nephrol. 2021; 52(8):673-83. Epub 2021 Sep 2. DOI: https://doi.org/10.1159/000518240

• Pre-operative wait times in high-grade non-endometrioid endometrial cancer: Do surgical delays impact patient survival?

  Nica A, Sutradhar R, Kupets R, Covens A, Vicus D, Li, Q, Ferguson SE, Gien LT. Gynecol Oncol. 2022; 164(2):333-40. Epub 2021 Dec 10. DOI: https://doi.org/10.1016/j.ygyno.2021.11.016

• Venous thromboembolism in surgically treated esophageal cancer patients: a provincial population-based study

  Akhtar-Danesh GG, Akhtar-Danesh N, Shargall Y. TH Open. 2022; 06(03):e168-76. Epub 2022 Jul 11. DOI: https://doi.org/10.1055/s-0042-1750378

• The burden of waiting for hip and knee replacements in Ontario

  Williams JI, Llewellyn TH, Arshinoff R, Young N, Naylor CD. J Eval Clin Pract. 1997; 3(1):59-68.

• Health services utilization, specialist care, and time to diagnosis with inflammatory bowel disease in immigrants to Ontario, Canada: a population-based cohort study

  Benchimol EI, Manuel DG, Mojaverian N, Mack DR, Nguyen GC, To T, Guttmann A. Inflamm Bowel Dis. 2016; 22(10):2482-90. Epub 2016 Aug 23.

• Time to adjuvant chemotherapy and survival in non-small cell lung cancer: a population-based study

  Booth CM, Shepherd FA, Peng Y, Darling G, Li G, Kong W, Biagi JJ, Mackillop WJ. Cancer. 2013; 119(6):1243-50. Epub 2012 Nov 6.

• The Goldman and Detsky surgical risk indices: Do they work in patients undergoing hip fracture surgery?

  Chan A, Livingstone D, Tu J. Ann R Coll Physicians Surg Can. 1999; 32(6):337-41.

• The influence of surgical specialty training on the outcomes of elective abdominal aortic aneurysm surgery

  Tu JV, Austin PC, Johnston KW. J Vasc Surg. 2001; 33(3):447-52.

• Using administrative databases to measure waiting times for patients undergoing major cancer surgery in Ontario, 1993–2000

  Simunovic M, Thériault ME, Paszat L, Coates A, Whelan T, Holowaty E, Levine M. Can J Surg. 2005; 48(2):137-42.

• A population-based study of the resource utilization and costs of managing resectable non-small cell lung cancer

  Mahar AL, Coburn NG, Johnson AP. Lung Cancer. 2014; 86(2):281-7. Epub 2014 Sep 20.

• Association of plasma-soluble ST2 and galectin-3 with cardiovascular events and mortality following cardiac surgery

  Patel DM, Thiessen-Philbrook H, Brown JR, McArthur E, Moledina DG, Mansour SG, Shlipak MG, Koyner JL, Kavsak P, Whitlock RP, Everett AD, Malenka DJ, Garg AX, Coca SG, Parikh CR. Am Heart J. 2020; 220:253-63. Epub 2019 Dec 3. DOI: https://doi.org/10.1016/j.ahj.2019.11.014

• Evolving management strategies in patients with adhesive small bowel obstruction: a population-based analysis

  Behman R, Nathens AB, Look Hong N, Pechlivanoglou P, Karanicolas PJ. J Gastrointest Surg. 2018; 22(12):2133-41. Epub 2018 Jul 26.

• Venous thromboembolism in surgical lung cancer patients: a provincial population-based study

  Akhtar-Danesh G, Akhtar-Danesh N, Shargall Y. Ann Thorac Surg. 2021; Nov 13 [Epub ahead of print]. DOI: https://doi.org/10.1016/j.athoracsur.2021.10.018

• Safety of glycoprotein IIb/IIIa inhibitors in urgent or emergency coronary artery bypass graft surgery

  Cheng DK, Jackevicius CA, Seidelin P, Feindel C, Rouleau JL. Can J Cardiol. 2004; 20(2):223-8.

• Costs and outcomes associated with alternative discharge strategies following joint replacement surgery: analysis of an observational study using a propensity score

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• Association of polypharmacy with survival, complications and healthcare resource use after elective noncardiac surgery: a population-based cohort study

  McIsaac DI, Wong CA, Bryson GL, van Walraven C. Anesthesiology. 2018; 128(6):1140-50. Epub 2018 Feb 13.

• Recurrence of inguinal hernias repaired in a large hernia surgical specialty hospital and general hospitals in Ontario, Canada

  Malik A, Bell CM, Stukel TA, Urbach DR. Can J Surg. 2016; 59(1):19-25. Epub 2015 Dec 1.

• Association between angiotensin converting enzyme inhibitor or angiotensin receptor blocker use prior to major elective surgery and the risk of acute dialysis

  Shah M, Jain AK, Brunelli SM, Coca SG, Devereaux PJ, James MT, Luo J, Molnar AO, Mrkobrada M, Pannu N, Parikh CR, Paterson M, Shariff S, Wald R, Walsh M, Whitlock R, Wijeysundera DN, Garg AX. BMC Nephrol. 2014; 15:53.

• A population-based comparative effectiveness study of peripheral nerve blocks for hip fracture surgery

  Hamilton GM, Lalu MM, Ramlogan R, Bryson GL, Abdallah FW, McCartney CJL, McIsaac DI. Anesthesiology. 2019; 131:1025-35. Epub 2019 Sep 12. DOI: https://doi.org/10.1097/ALN.0000000000002947

• Association of T cell-derived inflammatory cytokines with acute kidney injury and mortality after cardiac surgery

  Moledina DG, Mansour SG, Jia Y, Wassim O, Thiessen-Philbrook H, Koyner JL, McArthur E, Garg AX, Wilson FP, Shlipak MG, Coca SG, Parikh CR; TRIBE-AKI Consortium. Kidney Int Rep. 2019; 4(12):1689-97. Epub 2019 Sep 11. DOI: https://doi.org/10.1016/j.ekir.2019.09.003

• Persistent postoperative opioid use: a systematic literature search of definitions and population-based cohort study

  Jivraj NK, Raghavji F, Bethell J, Wijeysundera DN, Ladha KS, Bateman BT, Neuman MD, Wunsch H. Anesthesiology. 2020; 132(6):1528-39. Epub 2020 Mar 31. DOI: https://doi.org/10.1097/ALN.0000000000003265

• Effects of quality-based procedure hospital funding reform in Ontario, Canada: an interrupted time series study

  Li AH, Palmer KS, Taljaard M, Paterson JM, Brown A, Huang A, Marani H, Lapointe-Shaw L, Pincus D, Wettstein MS, Kulkarni GS, Wasserstein D, Ivers N. PLoS One. 15(8):e0236480. Epub 2020 Aug 19. DOI: https://doi.org/10.1371/journal.pone.0236480

• Analysis of the relationship between surgeon procedure volume and complications after total knee arthroplasty using a propensity-matched cohort study

  Okoro T, Tomescu S, Paterson JM, Ravi B. BMJ Surg Interv Health Technologies. 2021; 3:e000072. Epub 2021 Apr 2. DOI: https://doi.org/10.1136/bmjsit-2020-000072

• Minimally invasive compared to open colorectal cancer resection for older adults: a population-based analysis of long-term functional outcomes

  Behman R, Chesney T, Coburn N, Haas B, Bubis L, Zuk V, Ashamalla S, Zhao H, Mahar A, Hallet J; REcovery after Surgical Therapy for Older adults Research – Cancer (RESTORE-Cancer). Ann Surg. 2021; Aug 19 [Epub ahead of print]. DOI: https://doi.org/10.1097/SLA.0000000000005151

• Long-term outcomes of patients surgically treated for Hirschsprung disease

  Nasr A, Grandpierre V, Sullivan KJ, Wong CA, Benchimol EI. J Can Assoc Gastroenterol. 2021; 4(5):201-6. Epub 2020 Aug 20. DOI: https://doi.org/10.1093/jcag/gwaa026

• An Evaluation of the Quality of Administrative Data Relating to Hip and Knee Replacement Surgery

  Pink GH, Young W, Porter J, McKillop I. April 2000

• A national strategy for waiting-times research?

  Slaughter PM, Carlisle J, Williams J, Ferris LE. CMAJ. 2005; 172(10):1283-4.

• Health Human Resources for Neurosurgical Services in Ontario

  Tepper J, Jaigobin C, Wang C. June 2005

• Derivation and external validation of a risk index for predicting acute kidney injury requiring kidney replacement therapy after noncardiac surgery

  Wilson TA, de Koning L, Quinn RR, Zarnke KB, McArthur E, Iskander C, Roshanov PS, Garg AX, Hemmelgarn BR, Pannu N, James MT. JAMA Netw Open. 2021; 4(8):e2121901. Epub 2021 Aug 2. DOI: https://doi.org/10.1001/jamanetworkopen.2021.21901

• September 2007

  • Cataract surgery rates more than doubled in Ontario: demand still exceeds supply
  • One in four elderly Ontarians with hypertension prescribed unproven drug combinations
  • Immigrant women not receiving adequate cervical cancer screening
  • Inpatient smoking-cessation counseling is an underused intervention
  • Better anticoagulation control needed for hospitalized patients

• May 2007

  • Many nursing homes prescribe antipsychotic drugs to residents who don't need them
  • Growth of cardiac technology in Ontario is outpacing scientific evidence
  • Satellite haemodialysis units are effective for service delivery in rural Ontario
  • Study explores depression, gender and income levels in recent Canadian immigrants
  • Significant regional variation exists across Ontariofor anti-reflux surgery to treat GERD

• March 2012

  • Patients prescribed painkillers after minor surgery may become chronic users
  • Antibiotic and dementia drug combination not linked to increased cardiac events in seniors
  • Kidney donors at no greater risk of heart disease than non-donors
  • Primary care models vary in their care for Ontario’s poor and sick
  • Higher-spending hospitals in Ontario have better patient outcomes

• December 2015

  • New ICES atlas examines head and neck cancer surgery in Ontario
  • Physician-diagnosed migraine associated with increased risk of deliberate self-harm
  • Less than half of eligible Ontarians get all recommended screening tests for cancer, diabetes and heart disease
  • Study of pregnancy complications finds refugee women in Ontario have higher rates of HIV
  • Rural seniors underuse preventive diagnostic services for acute myocardial infarction

• January 2015

  • Only one-third of Ontario pharmacies participate in smoking cessation program
  • No change in proportion of spinal cord injury patients assessed by a urologist in a decade
  • Prevalence of ankylosing spondylitis nearly tripled in Ontario in 20 years
  • Increased number of Ontario children and youth being treated for concussion
  • Salivary gland cancer surgery rates in Ontario vary significantly by health region

• October 2015

  • Study shows “healthy immigrant” effect in rates of major cardiovascular events in Ontario
  • No increase in adverse outcomes for elective day surgery when doctor worked night before
  • Study establishes risk of death during chronic opioid therapy, men at much higher risk than women
  • Air pollution exposure leads to increased health service use by people with chronic illness
  • Source region plays a role in type and intensity of mental health services accessed by immigrants

• March 2015

  • Family physicians and psychiatrists among the most common specialties caring for Ontarians with HIV
  • Combining neuraxial and general anesthesia leads to no reduction in medical complications following surgery
  • Risk of ischemic stroke highest during first 30 days of warfarin therapy
  • ICES report examines the burden of mental illness and addictions on Ontario children and youth
  • Repeated performance assessments improve predictions for cancer patient risk of death

• February 2014

  • Rates of thyroid cancer diagnosis vary four-fold across Ontario’s health planning regions
  • Adults with chronic kidney disease at increased risk for bone fracture
  • Lower surgeon volumes linked to greater risk of postsurgery hospitalization in patients with Crohn’s disease
  • Heart rate at hospital discharge a predictor of mortality in patients with chronic heart failure
  • Women with schizophrenia at higher risk for pre-term birth and pregnancy complications

• October 2014

  • One in 200 Ontarians have inflammatory bowel disease; rate among world's highest
  • No difference in risk of adverse gastrointestinal events with two eye drugs
  • Few patients with bladder cancer referred to a medical oncologist prior to surgery
  • Long-term proton pump inhibitor therapy linked to hospitalization for low blood magnesium
  • Babies born in Canada to immigrant mothers have lower risk of cerebral palsy

• March 2016

  • Suicide risk threefold higher after concussion; rates highest following weekend concussions
  • Lower income Ontario seniors less likely to access newly approved blood thinner
  • Emergency visits by Ontario youth for mental health and addictions increased by 32% over six years
  • Even moderate changes in air temperature can lead to increase in deaths
  • Significant rise in gallbladder disease surgery among children in 20-year period

• January 2016

  • Quality of mental health services varies across Ontario: ICES/HQO report
  • Fast food “swamps” linked to high obesity rates when healthier choices crowded out
  • Safe injection facilities would be cost-effective in Toronto and Ottawa
  • Use of common antibiotic increases risk for tendon rupture and aortic aneurysm
  • Many Ontarians with dementia do not get rehabilitative care following hip fracture surgery

• February 2016

  • Five per cent of Ontario residents account for 65% of health care costs
  • Adults prescriptions for ADHD drugs more than doubled in five years, but access uneven across Canada
  • Patients of female doctors more likely to get cancer screening, less likely to be hospitalized
  • Unnecessary blood tests common prior to low-risk surgery, with high variation between hospitals
  • Threefold risk of death from cancer after solid organ transplant

• September 2011

  • Emergency department triage of heart attack patients improved in Ontario
  • One in four Ontario adults will be diagnosed with COPD: study
  • Few Ontario women with gestational diabetes receive followup testing for type 2 diabetes
  • Many seniors fail to renew prescriptions after discharge from hospital
  • Cholinesterase inhibitors not linked to postsurgery complications in seniors with dementia

• August 2011

  • Study raises doubts about value of heart ultrasound before elective surgery
  • Ontario’s recent immigrants safer drivers than long-term residents: study
  • Canada’s nonwhite ethnic groups at higher risk for Type 2 diabetes than white counterparts
  • ED wait times associated with higher rates of mortality and hospital admission in Ontario
  • Bronchodilators linked to bladder dysfunction in patients with COPD

• May 2011

  • One in 25 patients have complications after implanted cardioverter-defibrillator replacement
  • Statin use before major elective surgery may prevent kidney injury in older patients
  • Patients with incidental abdominal aneurysms not receiving appropriate follow-up
  • Ontario women with depression less likely to seek screening for breast, cervical cancer
  • Assessment tools track symptoms and performance status for end-of-life cancer care

• January 2011

  • Most Ontarians have geographic access to primary and urgent care [Clarification]
  • Children from low-income neighbourhoods more likely to undergo surgery for bowel disease
  • Macrolide antibiotics pose a risk for seniors being treated for hypertension
  • Infectious diseases kill nearly 5,000 Ontarians annually: OAHPP/ICES study
  • Rheumatoid arthritis patients treated by specialists more likely to receive early drug therapy

• October 2010

  • Regionalization of pancreatic cancer surgery linked to mortality drop in Ontario but not Quebec
  • Diabetes in pregnancy associated with higher rates of complications: POWER Study
  • Young adults with colorectal cancer at increased risk of death 10 years after diagnosis
  • Headache the most common reason for CT brain scan
  • Increased wait times for long-term care but faster placement for Ontario seniors most in need

• June 2010

  • Lack of primary care physicians putting Ontario's children at risk
  • Risk-factor control edges out new therapies as source of CHD mortality decline
  • Diabetes cases in Canada to increase by almost two million between 2007 and 2017
  • Adverse outcomes from joint replacement surgery not linked to provider volumes
  • Heart failure patients discharged from ED at higher risk of early death than hospitalized patients

• February 2010

  • Ultrasound use soars for pregnant women, even in low-risk pregnancies
  • Older patients with refractory depression may not be getting the treatment they need
  • Low-risk patients do not benefit from cardiac stress testing before major surgery
  • Physicians in non-fee-for-service practice models benefit most from primary care reforms
  • One in three Ontarians at risk of being diagnosed with asthma

• January 2010

  • Deaths related to narcotic pain relievers have doubled since 1991 in Ontario
  • Women's lower rates of surgery after stroke explained by differences in disease severity
  • Low-income Ontarians with diabetes have higher early death rates
  • Cost of blood glucose test strips to top $500 million in Ontario by 2013
  • Many Canadians feel their health care needs are not being met

• October 2006

  • Joint replacement surgery wait times impacted by patients’ willingness to have procedure
  • Women newly-diagnosed with diabetes are more likely to have a history of breast cancer
  • Analysis reveals important lessons about cross-provincial drug plan research
  • Initial, confidential CABG report cards had biggest impact on reducing mortality rates
  • ICES report examines the burden of asthma in the under 40 population

• July/August 2009

  • Canadian spending on heart drugs doubles to more than $5 billion a year
  • Ontario women live longer but are sicker: Project for an Ontario Women's Health Evidence-based Report (POWER) study
  • Household income influences risk of death in infants with complex medical conditions
  • Physician visits made by asthma sufferers exposed to air pollution linked to income level
  • Hip and knee replacement surgery saves the health system money

• May 2009

  • Highly educated Ontarians have better access to psychiatric care
  • Drug for enlarged prostate can cause complications after cataract surgery
  • Serious adverse events linked to use of dementia drug in older adults
  • Even mild blood sugar-level abnormalities during pregnancy increase type 2 diabetes risk
  • Many patients who undergo incomplete colonoscopies receive suboptimal follow-up

• March 2009

  • Wealthy Ontarians have better access to MRI scans
  • Diabetes testing more common but its effectiveness questioned
  • Risk of eye infection low after cataract surgery
  • Audit finds major improvements in stroke care in Ontario
  • Study questions use of expensive patient transfer resources for routine, non-urgent trips

• April 2009

  • Ontario achieves modest gains with universal influenza immunization program
  • Anesthesia consultation before surgery reduces hospital stay
  • Diabetic patients with heart disease receive more benefit from paclitaxel-eluting stents
  • Statin therapy associated with reduced mortality at five years in heart failure patients
  • Wealthier heart attack survivors more likely to make needed lifestyle changes

• June 2005

  • Ontario facing critical shortage of neurosurgery specialists
  • Stopping warfarin therapy after major trauma may increase risk of blood clots in the elderly
  • Introduction of laparoscopic cholecystectomy has lowered incidence of severe gallstone disease
  • Alternative funding arrangements (AFAs) have not led to big changes in ED physician workforce
  • Socioeconomic status not associated with mortality in elderly pneumonia patients

• May 2005

  • New cholesterol guidelines will cost health care system millions in unnecessary prescriptions
  • Hospital type and delays to surgery impact outcomes for hip fracture patients
  • More neighbourhood fast-food restaurants associated with more heart disease and deaths
  • Certain Ontarians with diabetes still experience high complication rates, despite overall decline
  • Dementia drugs may cause increased prescribing of incontinence medications to the elderly

• Februrary 2005

  • Blueprint for children’s health services needed in Ontario
  • SSRIs do not increase risk of digoxin toxicity
  • Minorities under represented in clinical trials
  • Surgeon specialty and volume impacts outcomes in patients undergoing surgery for lung cancer
  • Single data source could help improve heart attack care in Canada

• January 2005

  • Potentially inappropriate drugs for seniors available through ODB
  • Alcohol-related hospitalizations highest in low-income, middle-aged individuals
  • Study shows new benefit of statins in heart failure patients
  • Diabetics who manage glucose levels effectively are not as diligent with other conditions
  • Elderly colorectal cancer patients have worse outcomes following surgery

• June 2003

  • Pre-operative chest X-ray and ECG are often unnecessary
  • New baby in home increases risk of iron poisoning in young children
  • Low screening rates for diabetic eye disease may be due to changes in OHIP coverage
  • Surgery in high-volume hospitals prevents few post-operative deaths
  • ICES Cardiovascular Atlas provides stimulus for improvement

• June 2008

  • Antipsychotic drugs prescribed for elderly patients with dementia may be dangerous
  • Earlier predictions seriously underestimate the prevalence of hypertension by 2025
  • Women with gestational diabetes at increased risk for cardiovascular disease after pregnancy
  • Distinct age and sex differences evident in medicinal self-poisonings
  • Study finds further opportunities to prevent hospital deaths following CAGB surgery

• October 2008

  • Warfarin underused by patients at high risk for stroke
  • Statin use in elderly patients linked to higher risk of delirium after surgery
  • Attendance at diabetes education centres associated with access to regular primary care
  • Study finds disparities in access to diagnostic imaging services among elderly Ontarians
  • Surgeon's specialty a factor in repeat surgeries for women with ovarian cancer

• October 2013

  • Half of uterine cancer patients in Ontario wait longer than recommended six weeks for surgery
  • Better selection criteria needed for patients with stable angina who undergo angiograms
  • Cancer and chronic disease screening lowest in disadvantaged neighbourhoods
  • Risk of dying one year after hospitalization in Ontario fell sharply between 1994 and 2009
  • Drug prescribing significantly influenced by clinical evidence and policy changes

• July/August 2013

  • Diabetes-related mortality rates plummet in Canada and the UK since mid-1990s
  • Commonly coprescribed statins and antibiotics linked to muscle loss, kidney failure in seniors
  • Low-income heart attack survivors less likely to engage in life-extending exercise
  • Trends and inequities persist after launch of colorectal cancer screening program
  • Four in five Ontario patients visiting an orthopedic surgeon do not receive surgery

• Hospital procedure volume and teaching status do not influence treatment and outcome measures of rectal cancer surgery in a large general population

  Simunovic M, To T, Baxter N, Balshem A, Ross E, Cohen Z, McLeod R, Engstrom P, Sigurdson E. J Gastrointest Surg. 2000; 4(3):324-30.

• Development of an algorithm to identify preoperative medical consultations using administrative data

  Wijeysundera DN, Austin PC, Hux JE, Beattie WS, Buckley DN, Laupacis A. Med Care. 2009; 47(12):1258-64.

• Utilization of preoperative imaging in uterine cancer patients

  Gien LT, Barbera L, Kupets R, Saskin R, Paszat L. Gynecol Oncol. 2009; 115(2):226-30. Epub 2009 Aug 15.

• Association between ACE inhibitors and acute pancreatitis in the elderly

  Cheng RM, Mamdani M, Jackevicius CA, Tu K. Ann Pharmacother. 2003; 37(7-8):994-8.

• Patterns of care for the initial management of cervical cancer in Ontario

  Elit L, Schultz S, Prysbysz R, Barbera L, Saskin R, Gunraj N, Wilton A, Urbach D, Simunovic M. Eur J Gynaecol Oncol. 2009; 30(5):493-6.

• Postoperative pneumonia in elderly patients receiving acid suppressants: a retrospective cohort analysis

  Redelmeier DA, McAlister FA, Kandel CE, Lu H, Daneman N. BMJ. 2010; 340:c2608.

• Preoperative statin use and postoperative acute kidney injury

  Brunelli SM, Waikar SS, Bateman BT, Chang TI, Lii J, Garg AX, Winkelmayer WC, Choudry NK. Am J Med. 2012; 125(12):1195-1204. Epub 2012 Oct 10.

• Regional variations in the use of home care services in Ontario, 1993/94

  Coyte PC, Young W. CMAJ. 1999; 161(4):376-80.

• Sex differences in carotid endarterectomy outcomes: results from the Ontario Carotid Endarterectomy Registry

  Kapral MK, Wang H, Austin PC, Fang J, Kucey D, Bowyer B, Tu JV. Stroke. 2003; 34(5):1120-4. Epub 2003 Apr 10.

• Assessing the volume-outcome hypothesis and region-level quality improvement interventions: pancreas cancer surgery in two Canadian provinces

  Simunovic M, Urbach D, Major D, Sutradhar R, Baxter N, To T, Brown A, Davis D, Levine M. Ann Surg Oncol. 2010; 17(10):2537-44. Epub 2010 Jul 13.

• Risk of perioperative blood transfusions and postoperative complications associated with serotonergic antidepressants in older adults undergoing hip fracture surgery

  Seitz DP, Bell CM, Gill SS, Reimer CL, Herrmann N, Anderson GM, Newman A, Rochon PA. J Clin Psychopharmacol. 2013; 33(6):790-8. Epub 2013 Oct 5.

• Impact of wait times on survival for women with uterine cancer

  Elit LM, O'Leary E, Pond GR, Seow HY. J Clin Oncol. 2014; 32(1):27-33. Epub 2014 Jan 20.

• Derivation and validation of a clinical model to predict intensive care unit length of stay after cardiac surgery

  Sun LY, Bader Eddeen A, Ruel M, MacPhee E, Mesana TG. J Am Heart Assoc. 2020; 9(21):e017847. Epub 2020 Sep 29. DOI: https://doi.org/10.1161/JAHA.120.017847

• Surgical outcomes among focused versus diversified cataract surgeons

  Campbell RJ, El-Defrawy SR, Gill SS, Whitehead M, Campbell ELP, Hooper PL, Bell CM, Ten Hove MW. Ophthalmology. 2021; 128(6):827-34. Epub 2021 Feb 23. DOI: https://doi.org/10.1016/j.ophtha.2021.01.016

• Association of frailty and 1-year postoperative mortality following major elective noncardiac surgery: a population-based cohort study

  McIsaac DI, Bryson GL, van Walraven C. JAMA Surg. 2016; 151(6):538-45. Epub 2016 Jan 20.

• First post-operative urinary kidney injury biomarkers and association with the duration of AKI in the TRIBE-AKI cohort

  Coca SG, Nadkarni GN, Garg AX, Koyner J, Thiessen-Philbrook H, McArthur E, Shlipak MG, Parikh CR. PLoS One. 2016; 11(8):e0161098.

• Effects of cholinesterase inhibitors on postoperative outcomes of older adults with dementia undergoing hip fracture surgery

  Seitz DP, Gill SS, Gruneir A, Austin PC, Anderson G, Reimer CL, Rochon PA. Am J Geriatr Psychiatry. 2011; 19(9):803-13.

• Duration of preoperative β-blockade and outcomes after major elective noncardiac surgery

  Wijeysundera DN, Beattie WS, Wijeysundera HC, Yun L, Austin PC, Ko DT. Can J Cardiol. 2013; 30(2):217-23. Epub 2013 Oct 24.

• Association of the hospital volume of frail surgical patients cared for with outcomes after elective, major noncardiac surgery: a retrospective population-based cohort study

  McIsaac DI, Wijeysundera DN, Huang A, Bryson GL, van Walraven C. Anesthesiology. 2017; 126(4):602-13.

• Predictive ability of novel cardiac biomarkers ST2 Galectin‐3 and NT‐ProBNP before cardiac surgery

  Polineni S, Parker DM, Alam SS, Thiessen-Philbrook H, McArthur E, DiScipio AW, Malenka DJ, Parikh CR, Garg AX, Brown JR. J Am Heart Assoc. 2018; 7(14):e008371. Epub 2018 Jul 7.

• Perioperative heart-type fatty acid binding protein is associated with acute kidney injury after cardiac surgery

  Schaub JA, Garg AX, Coca SG, Testani JM, Shlipak MG, Eikelboom J, Kavsak P, McArthur E, Shortt C, Whitlock R, Parikh CR. Kidney Int. 2015; 88(3):576-83. Epub 2015 Apr 1.

• Hospital-, anesthesiologist-, and patient-level variation in primary anesthesia type for hip fracture surgery: a population-based cross-sectional analysis

  McIsaac DI, Wijeysundera DN, Bryson GL, Huang A, McCartney CLJ, van Walraven C. Anesthesiology. 2018; 129(6):1121-31. Epub 2018 Sep 26.

• The association of female sex with application of evidence-based practice recommendations for perioperative care in hip fracture surgery

  Cho N, Boland L, McIsaac DI. CMAJ. 2019; 191(6):E151-8. Epub 2019 Feb 11.

• Evaluating quality metrics and cost after discharge: a population-based cohort study of value in health care following elective major vascular surgery

  de Mestral C, Salata K, Hussain MA, Kayssi A, Al-Omran M, Roche-Nagle G. Ann Surg. 2018; 270(2):378-83. Epub 2018 Apr 18. DOI: 10.1097/SLA.0000000000002767.

• Exclusive cataract surgical focus among ophthalmologists: a population-based analysis

  Campbell RJ, ten Hove MW, Bell CM, Gill SS, Hooper PL, Whitehead M, Campbell E de LP, El-Defrawy SR. Can J Ophthalmol. 2020; 55(5):359-65. Epub 2020 Jun 24. DOI: https://doi.org/10.1016/j.jcjo.2020.05.003

• Long-term health outcomes and health system costs associated with surgical site infections: a retrospective cohort study

  Petrosyan Y, Thavorn K, Maclure M, Smith G, McIsaac DI, Schramm D, Moloo H, Preston R, Forster AJ. Ann Surg. 2021; 273(5):917-23. Epub 2019 Mar 19. DOI: 10.1097/SLA.0000000000003285.

• Persistent postoperative opioid prescription fulfillment and peripheral nerve blocks for ambulatory shoulder surgery: a retrospective cohort study

  Hamilton GM, Tierney S, Ramlogan R, McCartney CJL, Bromley LA, McIsaac DI. Anesthesiology. 2021; 135(5):829-41. Epub 2021 Sep 15. DOI: https://doi.org/10.1097/ALN.0000000000003962

• Hospital-, anaesthetist-, and patient-level variation in peripheral nerve block utilisation for hip fracture surgery: a population-based cross-sectional study

  McGinn R, Talarico R, Hamiltoon GM, Ramlogan R, Wijeysundra DN, McCartney CJL, McIsaac DI. Br J Anaesth. 2022; 128(1):198-206. Epub 2021 Nov 15. DOI: https://doi.org/10.1016/j.bja.2021.10.011

• Impact of care by gynecologic oncologists on primary ovarian cancer survival: a population-based study

  Bouchard-Fortier G, Gien LT, Sutradhar R, Chan WC, Krzyzanowska MK, Liu S, Ferguson SE. Gynecol Oncol. 2022; 164(3):522-8. Epub 2022 Jan 19. DOI: https://doi.org/10.1016/j.ygyno.2022.01.003

• Pre-operative kidney biomarkers and risks for death, cardiovascular and chronic kidney disease events after cardiac surgery: the TRIBE-AKI study

  Vasquez-Rios G, Moledina DG, Jia Y, McArthur E, Mansour SG, Thiessen-Philbrook H, Shlipak MG, Koyner JL, Garg AX, Parikh CR, Coca SG; TRIBE-AKI Consortium. J Cardiothorac Surg. 2022; 17(1):338. Epub 2022 Dec 25. DOI: https://doi.org/10.1186/s13019-022-02066-4

• Association between familiarity of the surgeon-anesthesiologist dyad and postoperative patient outcomes for complex gastrointestinal cancer surgery

  Hallet J, Sutradhar R, Jerath A, d'Empaire PP, Carrier F, Turgeon A, McIsaac DI, Idestrup C, Lorello G, Flexman A, Kidane B, Kaliwal Y, Chan WC, Barabash V, Coburn N, Eskander A. JAMA Surg. 2023; Feb 22 [Epub ahead of print]. DOI: https://doi.org/10.1001/jamasurg.2022.8228

• Patient reported symptom burden amongst immigrant and Canadian long-term resident women undergoing breast cancer surgery

  Parvez E, Chu M, Kirkwood D, Doumouras A, Levine M, Bogach J. Breast Cancer Res Treat. 2023; Apr 21 [Epub ahead of print]. DOI: https://doi.org/10.1007/s10549-023-06938-8

• Outcomes of surveillance mammography after treatment of primary breast cancer: a population-based case series

  Paszat L, Sutradhar R, Grunfeld E, Gainford C, Benk V, Bondy S, Coyle D, Holloway C, Sawka C, Shumak R, Vallis K, van Walraven C. Breast Cancer Res Treat. 2009; 114(1):169-78. Epub 2008 Mar 27.

• Association between handover of anesthesia care and adverse postoperative outcomes among patients undergoing major surgery

  Jones PM, Cherry RA, Allen BN, Bray Jenkyn KMB, Shariff SZ, Flier S, Vogt KN, Wijeysundera DN. JAMA. 2018; 319(2):142-53.

• Association between neuraxial anaesthesia or general anaesthesia for lower limb revascularisation surgery in adults and clinical outcomes: population based comparative effectiveness study

  Roberts DJ, Nagpal SK, Kubelik D, Brandys T, Stelfox HT, Lalu MM, Forster AJ, McCartney CJL, McIsaac DI. BMJ. 2020;371:m4104. Epub 2020 Nov 25. DOI: https://dx.doi.org/10.1136/bmj.m4104

• Comparison of multidimensional frailty instruments for estimation of long-term patient-centered outcomes after cardiac surgery

  Sun LY, Jabagi H, Fang J, Lee DS. JAMA Netw Open. 2022; 5(9):e2230959. Epub 2022 Sep 9. DOI: https://doi.org/10.1001/jamanetworkopen.2022.30959

• June 2018

  Remembering Jack Tu

  Infographics

  • High-risk medications often re-prescribed after potentially serious drug effects
  • People with schizophrenia spectrum disorders account for more than 1 in 10 suicide deaths in Ontario
  • Women's risk of blood clots may be doubled in the six weeks following an abortion

  ICES in the News

  • Sex ratios at birth among second generation mothers of South Asian ethnicity in Ontario, Canada
  • Reporting and evaluating wait times for urgent hip fracture surgery in Ontario, Canada
  • Association of cataract surgery with traffic crashes

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  Matta R, Wallis CJD, Goldenberg MG, Hird AE, Klaassen Z, Kulkarni G, Kodama RT, Herchorn S, Nam RK. Eur Urol. 2018; 75(1):3-7. Epub 2018 Sep 18.

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  Parikh CR, Puthumana J, Shlipak MG, Koyner JL, Thiessen-Philbrook H, McArthur E, Kerr K, Kavsak P, Whitlock RP, Garg AX, Coca SG. J Am Soc Nephrol. 2017; 28(12):3699-707. Epub 2017 Aug 14.

• Patient-reported symptoms following mastectomy alone or lumpectomy plus radiation for early stage breast cancer: a cohort study

  Davis LE, Fulton C, Bubis LD, Sussman J, Moody L, Barbera L, Li Q, Mahar AL, Coburn NG, Holloway CMB. Breast Cancer Res Treat. 2019; 175(3):721-31. Epub 2019 Mar 16. DOI: 10.1007/s10549-019-05196-x.

• Are urinary biomarkers better than acute kidney injury duration for predicting readmission?

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• Association of preoperative anticholinergic medication exposure with postoperative healthcare resource use and outcomes: a population-based cohort study

  McIsaac DI, Wong CA, Diep D, van Walraven C. Ann Surg. 2019; 270(6):1049-57. Epub 2018 Apr 18.

• Factors associated with emergency department presentation after total joint arthroplasty: a population-based retrospective cohort study

  Ravi B, Leroux T, Austin PC, Paterson JM, Aktar S, Redelmeier DA. CMAJ Open. 2020; 8(1): E26-33. Epub 2020 Jan 28. DOI: https://doi.org/10.9778/cmajo.20190116

• Management of cancer-associated intestinal obstruction in the final year of life

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• Intensive care utilization following major noncardiac surgical procedures in Ontario, Canada: a population-based study

  Jerath A, Laupacis A, Austin PC, Wunsch H, Wijeysundera DN. Intensive Care Med. 2018; 44(9):1427-35. Epub 2018 Jul 27.

• Partial vs. radical nephrectomy and the risk of all-cause mortality, cardiovascular, and nephrological outcomes

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• Association of perioperative red blood cell transfusions with all-cause and cancer-specific death in patients undergoing surgery for gastrointestinal cancer: long-term outcomes from a population-based cohort

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• Complication rates after endometrial ablation in Ontario, a cohort analysis of 76 446 patients

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• Derivation and validation of predictive indices for 30-day mortality after coronary and valvular surgery in Ontario, Canada

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• Derivation and external validation of a 30-day mortality risk prediction model for older patients having emergency general surgery

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• Long-term survival and temporal trends in patient and surgeon factors after elective and ruptured abdominal aortic aneurysm surgery

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• April 2021

  Infographics

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  • Obstetric and perinatal health outcomes after pertussis vaccination during pregnancy in Ontario, Canada: a retrospective cohort study
  • Injury-related deaths in the Ontario provincial trauma system: a retrospective population-based cohort analysis
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  • Assessing the validity of administrative health data for the identification of children and youth with autism spectrum disorder in Ontario

  ICES in the News

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  Needham DM, Bronskill SE, Sibbald WJ, Pronovost PJ, Laupacis A. Crit Care Med. 2004; 32(7):1504-9.

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  Dueck AD, Johnston KW, Alter D, Laupacis A, Kucey DS. J Vasc Surg. 2004; 39(4):784-7.

• Predictive accuracy study: comparing a statistical model to clinicians' estimates of outcomes after coronary bypass surgery

  Ivanov J, Borger MA, David TE, Cohen G, Walton N, Naylor CD. Ann Thorac Surg. 2000; 70(1):162-8.

• Differences between men and women in the rate of use of hip and knee arthroplasty

  Hawker GA, Wright JG, Coyte PC, Williams JI, Harvey B, Glazier R, Badley EM. N Engl J Med. 2000; 342(14):1016-22.

• Determining the need for hip and knee arthroplasty: the role of clinical severity and patients' preferences

  Hawker GA, Wright JG, Coyte PC, Williams JL, Harvey B, Glazier R, Wilkins A, Badley EM. Med Care. 2001; 39(3):206-16.

• Pitfalls in nonrandomized outcomes studies: the case of incidental appendectomy with open cholecystectomy

  Wen SW, Hernandez R, Naylor CD. JAMA. 1995; 274(21):1687-91.

• Effects of dementia on postoperative outcomes of older adults with hip fractures: a population based study

  Seitz DP, Gill SS, Gruneir A, Austin PC, Anderson GM, Bell CM, Rochon PA. J Am Med Dir Assoc. 2014; 15(5):334-41.

• Patterns of initial management of node-negative breast cancer in two Canadian provinces

  Goel V, Olivotto I, Hislop TG, Sawka C, Coldman A, Holowaty EJ. CMAJ. 1997; 156(1):25-35.

• The influence of risk on the results of warm heart surgery: a substudy of a randomized trial

  Christakis GT, Lichtenstein SV, Buth KJ, Fremes SE, Weisel RD, Naylor CD. Eur J Cardiothorac Surg. 1997;11(3):515-20.

• In the queue for total joint replacement: patients' perspectives on waiting times

  Llewellyn-Thomas HA, Arshinoff R, Bell M, Williams JI, Naylor CD. J Eval Clin Pract. 1998; 4(1):63-74.

• Gender differences in carotid imaging and revascularization following stroke

  Kapral MK, Ben-Yakov M, Fang J, Gladstone DJ, Saposnik G, Robertson A, Silver FL. Neurology. 2009; 73(23):1969-74.

• Outcomes and processes of care related to preoperative medical consultation

  Wijeysundera DN, Austin PC, Beattie WS, Hux JE, Laupacis A. Arch Intern Med. 2010; 170(15):1365-74.

• Relationship of erythrocyte transfusion with short- and long-term mortality in a population-based surgical cohort

  Karkouti K, Stukel TA, Beattie WS, Elsaadany S, Li P, Berger R, Wijeysundera DN. Anesthesiology. 2012; 117(6):1175-83.

• Higher surgeon and hospital volume improves long-term survival after radical cystectomy

  Kulkarni GS, Urbach DR, Austin PC, Fleshner NE, Laupacis A. Cancer. 2013; 119(19):3546-54. Epub 2013 Jul 9.

• Using G-computation to estimate the effect of regionalization of surgical services on the absolute reduction in the occurrence of adverse patient outcomes

  Austin PC, Urbach DR. Med Care. 2013; 51(9):797-805.

• Fifteen-year trends in risk severity and operative mortality in elderly patients undergoing coronary artery bypass graft surgery

  Ivanov J, Weisel RD, David TE, Naylor CD. Circulation. 1998; 97(7):673-80.

• Will elderly patients stand aside for younger patients in the queue for cardiac services?

  Mariotto A, De Leo D, Buono MD, Favaretti C, Austin P, Naylor CD. Lancet. 1999; 354(9177):467-70.

• Outcome of revascularization procedures for peripheral arterial occlusive disease in Ontario between 1991 and 1998: a population-based study

  Al-Omran M, Tu JV, Johnston KW, Mamdani MM, Kucey DS. J Vasc Surg. 2003; 38(2):279-88.

• Effect of widespread restrictions on the use of hospital services during an outbreak of severe acute respiratory syndrome

  Schull MJ, Stukel TA, Vermeulen MJ, Zwarenstein M, Alter DA, Manuel DG, Guttmann A, Laupacis A, Schwartz B. CMAJ. 2007; 176(13):1827-32.

• Factors associated with incomplete colonoscopy: a population-based study

  Shah H, Paszat LF, Saskin R, Stukel TA, Rabeneck L. Gastroenterology. 2007; 132(7):2297-303. Epub 2007 Mar 21.

• Cholecystostomy: a bridge to hospital discharge but not delayed cholecystectomy

  de Mestral C, Gomez D, Haas B, Zagorski B, Rotstein OD, Nathens AB. J Trauma Acute Care Surg. 2013; 74(1):175-80.

• Misclassification of hospital volume in surgical volume-outcome analyses of persons aged 65 years and older: potential limitations of medicare data

  Baxter NN, Urbach D. Evid Based Surg. 2003; 1(1):49-55.

• Association between perioperative beta blocker use and cancer survival following surgical resection

  Musselman RP, Bennett S, Li W, Mamdani M, Gomes T, van Walraven C, Boushey R, Al-Obeed O, Al-Omran M, Auer RC. Eur J Surg Oncol. 2018; 44(8):1164-9. Epub 2018 May 17.

• Utilization of pre-operative imaging for colon cancer: a population-based study

  McInnes MD, Nanji S, Mackillop WJ, Flemming JA, Wei X, Macdonald DB, Scheida N, Booth CM. J Surg Oncol. 2017; 115(2):202-7. Epub 2016 Nov 4.

• Effects of impairment in activities of daily living on predicting mortality following hip fracture surgery in studies using administrative healthcare databases

  Seitz DP, Anderson GM, Austin PC, Gruneir A, Gill SS, Bell CM, Rochon PA. BMC Geriatr. 2014; 14:9. Epub 2014 Jan 28.

• Initiation of antidepressant medication after hip fracture in community-dwelling older adults

  Iaboni A, Seitz DP, Fischer HD, Diong CC, Rochon PA, Flint AJ. Am J Geriatr Psychiatry. 2015; 23(10):1007-15. Epub 2014 Oct 16.

• Contralateral prophylactic mastectomy in young women with breast cancer: a population-based analysis of predictive factors and clinical impact

  Bouchard-Fortier A, Baxter NN, Sutradhar R, Fernandes K, Camacho X, Graham P, Quan ML. Curr Oncol. 2018; 25(6):e562-8. Epub 2018 Dec 1.

• Do lower risk thyroid cancer patients who live in regions with more aggressive treatments have better outcomes?

  Hall S, Irish JC, Groome PA, Griffiths R, Hurlbut D. Thyroid. 2017; 27(10):1246-57. Epub 2017 Aug 29.

• A population-based comparison of joint survival of hemiarthroplasty versus total shoulder arthroplasty in osteoarthritis and rheumatoid arthritis

  Lapner PLC, Rollins MD, Netting C, Tuna M, Bader Eddeen A, van Walraven C. Bone Joint J. 2019; 101-B(4):454-60. Epub 2019 Mar 31. DOI: 10.1302/0301-620X.101B4.BJR-2018-0620.R1.

• September 2019

  Infographics

  • Risks of preoperative anemia in women undergoing elective hysterectomy and myomectomy
  • Sex-specific differences in end-of-life burdensome interventions and antibiotic therapy in nursing home residents with advanced dementia
  • Chronic physical conditions and risk for perinatal mental illness: a population-based retrospective cohort study
  • Physician availability in long-term care and resident hospital transfer: a retrospective cohort study

  ICES in the News

  • Population-based secular trends in lower extremity amputation for diabetes and peripheral artery disease
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  • Days spent at home in the last 6 months of life: a quality indicator of end of life care in patients with hematologic malignancies
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  • Ambient air pollution and the risk of atrial fibrillation and stroke: a population-based cohort study
  • Incidence of hospitalizations and emergency department visits for herpes zoster in immunocompromised and immunocompetent adults in Ontario, Canada, 2002-2016
  • Understanding those overdue for cancer screening by five years or more: a retrospective cohort study in Ontario, Canada
  • Impact of the 2016 policy change on the delivery of Medscheck services in Ontario: an interrupted time-series analysis
  • The impact of hospital harm on length of stay, costs of care and length of person-centred episodes of care: a retrospective cohort study

• Does the frequency of routine follow-up after curative treatment for head-and-neck cancer affect survival?

  Hall SF, Owen T, Griffiths RJ, Brennan K. Curr Oncol. 2019; 26(5):295-306. Epub 2019 Oct 1. https://doi.org/10.3747/co.26.4949

• February 2020

  Infographics

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  • Factors associated with emergency department presentation after total joint arthroplasty: a population-based retrospective cohort study
  • Sex differences in care need and survival in patients admitted to nursing home poststroke
  • Evaluation of opioid discontinuation after non-orthopaedic surgery among chronic opioid users: a population-based cohort study

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  • First-ever ischemic stroke and incident major adverse cardiovascular events in 93 627 older women and men
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  • The impact of repeated vaccination using 10-year vaccination history on protection against influenza in older adults: a test-negative design study across the 2010/11 to 2015/16 influenza seasons in Ontario, Canada
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  • Socioeconomic status and days alive and out of hospital after major elective noncardiac surgery: a population-based cohort study
  • Infant and maternal outcomes for women who experience imprisonment in Ontario Canada: a retrospective cohort study
  • Health care utilization for musculoskeletal issues during the pre-diagnosis period in psoriatic arthritis: a population-based study
  • Incidence and outcomes of invasive fungal infection among solid organ transplant recipients: a population-based cohort study
  • Impact of diabetes on colorectal cancer stage and mortality risk: a population-based cohort study

• The impact of ductal carcinoma in situ on health services utilization

  Paszat L, Sutradhar R, Rakovitch E. Breast Cancer Res Treat. 2020; 182(1):159–68. Epub 2020 May 8. DOI: https://doi.org/10.1007/s10549-020-05664-9

• March 2021

  Event

  • Thank you to everyone who attended our virtual research symposium!

  Infographics

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  • Access to cancer surgery in a universal health care system during the COVID-19 pandemic
  • Factors associated with waiting time to breast cancer diagnosis among symptomatic breast cancer patients: a population-based study from Ontario, Canada
  • Mental Health and Addictions System Performance in Ontario: 2021 Scorecard

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  • Comparison of palliative care delivery in the last year of life between adults with terminal noncancer illness or cancer
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  • COVID-19 in Ontario: Notable findings for the week of March 7-13, 2021

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  • Does housing improve health care utilization and costs? A longitudinal analysis of health administrative data linked to a cohort of individuals with a history of homelessness
  • Overall health care cost during the year following diagnosis of colorectal cancer stratified by history of colorectal evaluative procedures
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  • Concordance between high antibiotic prescribing and high opioid prescribing among primary care physicians: a cross-sectional study
  • Health care costs associated with chronic hepatitis C virus infection in Ontario, Canada: a retrospective cohort study
  • Rates of rebleeding, thrombosis and mortality associated with resumption of anticoagulant therapy after anticoagulant-related bleeding
  • Association between continuity of care and subsequent diagnosis of multimorbidity in Ontario, Canada from 2001-2015: a retrospective cohort study
  • A population-based cohort study of respiratory disease and long-term exposure to iron and copper in fine particulate air pollution and their combined impact on reactive oxygen species generation in human lungs

• Colonic stents for colorectal cancer are seldom used and mainly for palliation of obstruction: a population-based study

  Borowiec AM, Wang CSK, Yong E, Law C, Coburn N, Sutradhar R, Baxter N, Paszat L, Tinmouth J. Can J Gastroenterol Hepatol. 2016; 2016:1945172. Epub 2016 Mar 29.

• May 2021

  Infographics

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  • Comparison of childhood asthma incidence in 3 neighbouring cities in southwestern Ontario: a 25‑year longitudinal cohort study
  • Suicide and self-harm in adult survivors of critical illness: population based cohort study
  • Delay of pregnancy among physicians vs nonphysicians

  ICES in the News

  • Individual and social determinants of SARS-CoV-2 testing and positivity in Ontario, Canada: a population-wide study
  • Perinatal outcomes during the COVID-19 pandemic in Ontario, Canada
  • COVID-19 in Ontario: Highlights for the week of May 2–8, 2021
  • Association between bariatric surgery and major adverse diabetes outcomes in patients with diabetes and obesity

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  • Risk factors for outbreaks of SARS-CoV-2 infection at retirement homes in Ontario, Canada: a population-level cohort study
  • The requirement for surgery and subsequent 30-day mortality in patients with COVID-19
  • Is coronavirus disease 2019 associated with indicators of long-term bladder dysfunction?
  • Sex differences in multimorbidity and polypharmacy trends: a repeated cross-sectional study of older adults in Ontario, Canada
  • Health care utilization in medically complex people living with HIV before and after admission to an HIV-specific community facility: a pre–post comparison study
  • Health care costs of rheumatoid arthritis: a longitudinal population study
  • Health care utilisation and costs associated with different treatment protocols for newly diagnosed childhood acute lymphoblastic leukaemia: a population-based study in Ontario, Canada
  • Derivation and validation of a two-variable index to predict 30-day outcomes following heart failure hospitalization

• April 2022

  Event

  • ICES 2022 Research Forum

  Infographics

  • Risk of suicide death following electroconvulsive therapy treatment for depression: a propensity score-weighted, retrospective cohort study in Canada
  • Follow-up after post-partum psychiatric emergency department visits: an equity-focused population-based study in Canada

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  • Cancer risk and mortality in patients with kidney disease: a population-based cohort study
  • Vaccine effectiveness against SARS-CoV-2 infection and severe outcomes among individuals with immune-mediated inflammatory diseases tested between March 1 and Nov 22, 2021, in Ontario, Canada: a population-based analysis
  • Association of patient-reported outcomes with subsequent nonfatal self-injury after a new cancer diagnosis

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  • Virtual care use during the COVID-19 pandemic and its impact on healthcare utilization in patients with chronic disease: a population-based repeated cross-sectional study
  • Impact of the COVID-19 pandemic on the prevalence of opioid agonist therapy discontinuation in Ontario, Canada: a population-based time series analysis
  • Hospitalizations during the COVID-19 pandemic among recently homeless individuals: a retrospective population-based matched cohort study
  • Hip arthroscopy utilization and reoperation rates in Ontario: a population-based analysis comparing different age cohorts
  • Survival effects of time to surgery for stage I lung cancer: a population-based study
  • Assessment of age and sex differences in risk of 1-year mortality after emergency department visits caused by alcohol use
  • Regional differences in access to direct-acting antiviral treatments for hepatitis C across Ontario: a cross-sectional study
  • Troponin testing after noncardiac surgery: a population-based historical cohort study on variation and factors associated with testing in Ontario

• September 2022

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  • Prepregnancy emergency department use and risks of severe maternal and neonatal morbidity in Canada
  • Changes in emergency department visits for cannabis hyperemesis syndrome following recreational cannabis legalization and subsequent commercialization in Ontario, Canada
  • Family physicians stopping practice during the COVID-19 pandemic in Ontario, Canada

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  • Initial healthcare costs for COVID-19 in British Columbia and Ontario, Canada: an inter-provincial population-based cohort study
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  • Trends in quality indicators of end-of-life care for women with gynecologic malignancies in Ontario, Canada
  • Rates, predictive factors, and adverse outcomes of fusion surgery for lumbar degenerative disorders in Ontario, Canada between 2006 and 2015: a retrospective cohort study
  • Cognitive decline in long-term care residents before and during the COVID-19 pandemic in Ontario, Canada
  • Regional collaborative home-based palliative care and health care outcomes among adults with heart failure
  • Incidence and mortality of emergency general surgery conditions among solid-organ transplant recipients in Ontario, Canada: a population-based analysis

• Appropriateness of primary total hip and knee replacements in regions of Ontario with high and low utilization rates

  van Walraven C, Paterson JM, Kapral M, Chan B, Bell M, Hawker G, Gollish J, Schatzker J, Williams JI, Naylor CD. CMAJ. 1996; 155(6):697-706.

• Removal or revision of vaginal mesh used for the treatment of stress urinary incontinence

  Welk B, Al-Hothi H, Winick-Ng J. JAMA Surg. 2015; 150(12):1167-75. Epub 2015 Sep 9.

• Association between operator specialty and outcomes after carotid artery revascularization

  Hussain MA, Mamdani M, Tu JV, Saposnik G, Salata K, Bhatt DL, Verma S, Al-Omran M. J Vasc Surg. 2018; 67(2):478-89.e6. Epub 2017 Aug 17.

• Population-level symptom assessment following pancreaticoduodenectomy for adenocarcinoma

  Tung S, Davis LE, Hallet J, Mavros MN, Mahar AL, Bubis LD, Hammad A, Zhao H, Earle CC, Barbera L, Coburn NG, Siqqidui M, Li Q, Elmi M, Shin E, Hsieh E, Goyert N; the Pancreas Cancer Population Outcomes Research Group. JAMA Surg. 2019: e193348. Epub 2019 Sep 4. DOI: 10.1001/jamasurg.2019.3348.

• How do common comorbidities modify the association of frailty with survival after elective noncardiac surgery? A population-based cohort study

  Hui Y, van Walraven C, McIsaac DI. Anesth Analg. 2019; 129(6):1699-706. Epub 2019 Aug 22. DOI: https://doi.org/10.1213/ANE.0000000000004387.

• Association of bilateral salpingo-oophorectomy with all cause and cause specific mortality: population based cohort study

  Cusimano MC, Chiu M, Ferguson SE, Moineddin R, Aktar S, Liu N, Baxter NN. BMJ. 2021; 375:e067528. Epub 2021 Dec 9. DOI: http://dx.doi.org/10.1136/bmj-2021-067528

• Timeliness and modality of treatment for new cancer diagnoses during the COVID-19 pandemic in Canada

  Fu R, Sutradhar R, Li Q, Hanna TP, Chan KKW, Irish JC, Coburn N, Hallet J, Dare A, Singh S, Parmar A, Earle CC, Lapointe-Shaw L, Krzyzanowska MK, Finelli A, Louie AV, Look Hong NJ, Witterick IJ, Mahar A, Urbach DR, McIsaac DI, Enepekides D, Tinmouth J, Eskander A. JAMA Netw Open. 2023; 6(1):e2250394. Epub 2023 Jan 10. DOI: https://doi.org/10.1001/jamanetworkopen.2022.50394

• A population-based study of the direct longitudinal health care costs of upper extremity trauma in patients aged 18-65 years

  Baltzer HL, Hawker G, Pequeno P, Victor JC, Krahn M. CMAJ Open. 2023; 11(1):E13-23. Epub 2023 Jan 10. DOI: https://doi.org/10.9778/cmajo.20210118

• Health data in Ontario: taking stock and moving ahead

  Iron K. Healthc Q. 2006; 9(3):24-6.

• Randomized trial of a patient decision aid for choice of surgical treatment for breast cancer

  Goel V, Sawka CA, Thiel EC, Gort EH, O'Connor AM. Med Decis Making. 2001; 21(1):1-6.

• January 2018

  Call for abstracts: IPDLN 2018 Conference

  Infographics

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  • Association between handover of anesthesia care and adverse postoperative outcomes among patients undergoing major surgery

  ICES in the News

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  ICES Top 17 of '17

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  • The relation between food insecurity and mental health care service utilization in Ontario
  • Intergenerational abortion tendency between mothers and teenage daughters: population based cohort study
  • The impact of diabetes on breast cancer treatments and outcomes: a population-based study
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• February 2018

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  • People who receive physician visits at home in last year of life are less likely to die in hospital
  • 3 in 4 Ontarians hospitalized for psychiatric care are admitted involuntarily

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  • Patterns of methadone maintenance treatment provision in Ontario: Policy success or pendulum excess?
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  • T-cell receptor excision circle levels and safety of paediatric immunization: a population-based self-controlled case series analysis
  • Association between newborn metabolic profiles and pediatric kidney disease
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  • Assessing covariate balance when using the generalized propensity score with quantitative or continuous exposures

• August 2018

  Report

  • Geographic Variation in Primary Care Need, Service Use and Providers in Ontario, 2015/16

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  • Food insecurity status and mortality among adults in Ontario, Canada
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  • A matched case-control study to assess the association between non-steroidal anti-inflammatory drug use and thrombotic microangiopathy

• January 2019

  Infographics

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  • Cervical cancer screening access for women who experience imprisonment in Ontario, Canada
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  • Appropriate treatment receipt after breast-conserving surgery

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• March 2019

  Infographics

  • Addressing Gaps in the Health Care Services Used by Adults with Developmental Disabilities in Ontario
  • Closed for business? Using a mixture model to explore the supply of psychiatric care for new patients
  • Association of duration of surgery with postoperative delirium among patients receiving hip fracture repair
  • Colorectal and breast cancer screening status for people in Ontario provincial correctional facilities

  Video

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  ICES in the News

  • The impact of psychiatric utilisation prior to cancer diagnosis on survival of solid organ malignancies
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  • Evaluation of the fentanyl patch-for-patch program in Ontario, Canada
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• October 2019

  Infographics

  • Influenza vaccine effectiveness in preventing hospitalizations in older patients with chronic obstructive pulmonary disease
  • Association between physician intensity of antibiotic prescribing and the prescription of benzodiazepines, opioids and proton-pump inhibitors to nursing home residents: a population-based observational study
  • Cardiovascular consequences of obstructive sleep apnea in women: a historical cohort study

  ICES in the News

  • Prevalence of inappropriateness of parenteral vitamin B12 administration in Ontario, Canada

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  • One-year home-time and mortality after thrombolysis compared with nontreated patients in a propensity-matched analysis
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  • Association of early-stage breast cancer and subsequent chemotherapy with risk of atrial fibrillation
  • An opioid prescription for men undergoing minor urologic surgery is associated with an increased risk of new persistent opioid use
  • Emergency department use in people who experience imprisonment in Ontario, Canada
  • Data variability across Canadian administrative health databases: differences in content, coding, and completeness

• November 2021

  Infographics

  • Statins and SARS‐CoV‐2 infection: results of a population‐based prospective cohort study of 469 749 adults from 2 Canadian provinces
  • Acute care visits for eating disorders among children and adolescents after the onset of the COVID-19 pandemic

  ICES in the News

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  • COVID-19 testing and vaccination coverage in Ontario

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  • Language proficiency and warfarin-related adverse events in older immigrants and Canadian residents: a population-based cohort study
  • Firearm injury epidemiology in children and youth in Ontario, Canada: a population-based study
  • Amiodarone, verapamil, or diltiazem use with direct oral anticoagulants and the risk of hemorrhage in older adults
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  • Hospital-, anaesthetist-, and patient-level variation in peripheral nerve block utilisation for hip fracture surgery: a population-based cross-sectional study

• February 2022

  Event

  • ICES Research Forum – Save the Date

  Infographics

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  • The association between recreational cannabis legalization, commercialization and cannabis attributable emergency department visits in Ontario, Canada: an interrupted time-series analysis

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  • Drug overdoses during the COVID-19 pandemic among recently homeless individuals
  • Prevalence, cost, and variation in cost of pediatric hospitalizations in Ontario, Canada
  • Association of diabetes duration and glycemic control with stroke rate in patients with atrial fibrillation and diabetes: a population-based cohort study

• Age at diagnosis predicts local recurrence in women treated with breast-conserving surgery and postoperative radiation therapy for ductal carcinoma in situ: a population-based outcomes analysis

  Kong I, Narod SA, Taylor C, Paszat L, Saskin R, Nofech-Moses S, Thiruchelvam D, Hanna W, Pignol JP, Sengupta S, Elavathil L, Jani PA, Done SJ, Metcalfe S, Rakovitch E. Curr Oncol. 2014; 21(1):e96-104.

• The effects of midazolam on propofol-induced anesthesia: propofol dose requirements, mood profiles, and perioperative dreams

  Oxorn DC, Ferris LE, Harrington E, Orser BA. Anesth Analg. 1997; 85(3):553-9.

• Derivation and validation of the surgical site infections risk model using health administrative data

  van Walraven C, Jackson TD, Daneman N. Infect Control Hosp Epidemiol. 2016; 37(4):455-65. Epub 2016 Jan 20.

• Use and effectiveness of adjuvant chemotherapy for stage III colon cancer: a population-based study

  Booth CM, Nanji S, Wei X, Peng Y, Biagi JJ, Hanna TP, Kryzanowska MK, Mackillop WJ. J Natl Compr Canc Netw. 2016; 14(1):47-56. Epub 2016 Jan 5.

• Is there a measurable association of epidural use at cystectomy and postoperative outcomes? A population-based study

  Doiron RC, Jaeger M, Booth CM, Wei X, Siemens DR. Can Urol Assoc J. 2016; 10(9-10):321-7.

• The decline of elective colectomy following diverticulitis: a population-based analysis

  Li D, Baxter NN, McLeod RS, Moineddin R, Nathens AB. Dis Colon Rectum. 2016; 59(4):332-9. Epub 2016 Apr 1.

• Outcomes of daytime procedures performed by attending surgeons after night work

  Govindarajan A, Urbach DR, Kumar M, Li Q, Murray BJ, Juurlink D, Kennedy E, Gagliardi A, Sutradhar R, Baxter NN. N Engl J Med. 2015; 373(9):845-53.

• Determinants of variations in coronary revascularization practices

  Tu JV, Ko DT, Guo H, Richards JA, Walton N, Natarajan MK, Wijeysundera HC, So D, Latter DA, Feindel CM, Kingsbury K, Cohen EA; Cardiac Care Network of Ontario’s Variations in Revascularization Practice in Ontario Working Group. CMAJ. 2012; 184(2):179-86. Epub 2011 Dec 12.

• Adjuvant chemotherapy for non-small-cell lung cancer in the elderly: a population-based study in Ontario, Canada

  Cuffe S, Booth CM, Peng Y, Darling GE, Li G, Kong W, Mackillop WJ, Shepherd FA. J Clin Oncol. 2012; 30(15):1813-21. Epub 2012 Apr 23.

• Combined general and neuraxial anesthesia versus general anesthesia: a population-based cohort study

  Nash DM, Mustafa RA, McArthur E, Wijeysundera DN, Paterson JM, Sharan S, Vinden C, Wald R, Welk B, Sessler DI, Devereaux PJ, Walsh M, Garg AX. Can J Anaesth. 2015; 62(4):356-68. Epub 2015 Jan 27.

• The need for acute, subacute and nonacute care at 105 general hospital sites in Ontario

  Flintoft VF, Williams JI, Williams RC, Basinski AS, Blackstien-Hirsch P, Naylor CD; Joint Policy and Planning Committee Non-Acute Hospitalization Project Working Group. CMAJ. 1998; 158(10):1289-96.

• The effect of education and income on need and willingness to undergo total joint arthroplasty

  Hawker GA, Wright JG, Glazier RH, Coyte PC, Harvey B , Williams JI, Badley EM. Arthritis Rheum. 2002; 46(12):3331-9.

• Differences in operative mortality between high- and low-volume hospitals in Ontario for 5 major surgical procedures: estimating the number of lives potentially saved through regionalization

  Urbach DR, Bell CM, Austin PC. CMAJ. 2003; 168(11):1409-14.

• Relation of hospital volume to colostomy rates and survival for patients with rectal cancer

  Hodgson DC, Zhang W, Zaslavsky AM, Fuchs CS, Wright WE, Ayanian JZ. J Nat Cancer Inst. 2003; 95(10):708-16.

• Regional lymph node involvement in patients undergoing liver resection for colorectal cancer metastases

  Nanji S, Tsang ME, Wei X, Booth CM. Eur J Surg Oncol. 2017; 43(2):322-9. Epub 2016 Dec 13.

• Refined estimates of local recurrence risks by DCIS score adjusting for clinicopathological features: a combined analysis of ECOG-ACRIN E5194 and Ontario DCIS cohort studies

  Rakovitch E, Gray R, Baehner FL, Sutradhar R, Crager M, Gu S, Nofech-Mozes S, Badve SS, Hanna W, Hughes LL, Wood WC, Davidson NE, Paszat L, Shak S, Sparano JA, Solin LJ. Breast Cancer Res Treat. 2018; 169(2):359-69. Epub 2018 Jan 1.

• Is there a sex effect in colon cancer? Disease characteristics, management, and outcomes in routine clinical practice

  Quirt JS, Nanji S, Wei X, Flemming JA, Booth CM. Curr Oncol. 2017; 24(1):e15-23.

• Thiazide diuretic dose and risk of kidney stones in older adults: a retrospective cohort study

  Alexander RT, McArthur E, Jandoc R, Welk B, Fuster DG, Garg AX, Quinn RR. Can J Kidney Health Dis. 2018; 5:2054358118787480. Epub 2018 Jul 15.

• A population-based study of survival impact of new targeted and immune-based therapies for metastatic or unresectable melanoma

  Hanna TP, Nguyen P, Baetz T, Booth CM, Eisenhauer E. Clin Oncol. 2018; 30(10):609-17. Epub 2018 Jun 28.

• Intra-articular hip injection and early revision following total hip arthroplasty: a retrospective cohort study

  Ravi B, Escott B, Wasserstein D, Croxford R, Hollands S, Paterson JM, Kreder H, Hawker GA. Arthritis Rheumatol. 2015; 67(1):162-8. Epub 2014 Sep 23.

• Relationship between surgeon volume and the risk of complications after total hip arthroplasty: propensity score matched cohort study

  Ravi B, Jenkinson R, Austin PC, Croxford R, Wasserstein D, Escott B, Paterson JM, Kreder H, Hawker GA. BMJ. 2014; 348:g3284. Epub 2014 May 23.

• Risk of total knee arthroplasty after operatively treated tibial plateau fracture: a matched-population-based cohort study

  Wasserstein D, Henry P, Paterson JM, Kreder HJ, Jenkinson R. J Bone Joint Surg Am. 2014; 96(2):144-50. Epub 2014 Jan 15.

• Disease characteristics, clinical management, and outcomes of young patients with colon cancer: a population-based study

  Rodriguez L, Brennan K, Karim S, Nanji S, Patel SV, Booth CM. Clin Colorectal Cancer. 2018; 17(4):e651-61. Epub 2018 Jul 3.

• High complication rate among patients undergoing appendectomy in Ontario: a population-based retrospective cohort study

  Patel SV, Nanji S, Brogly SB, Lajkosz K, Groome PA, Merchant S. Can J Surg. 2018; 61(6):412-7. Epub 2018 Oct 1.

• Omitting radiation therapy after lumpectomy for pure DCIS does not reduce the risk of salvage mastectomy

  Rakovitch E, Nofech-Mozes S, Hanna W, Sutradhar R, Gu S, Fong C, Tuck A, Youngson B, Miller N, Done SJ, Chang MC, Sengupta S, Elavathil L, Jani PA, Bonin M, Lalani N, Paszat L. Breast. 2018; 37:181-6. Epub 2017 Aug 3.

• Including the ductal carcinoma-in-situ (DCIS) score in the development of a multivariable prediction model for recurrence after excision of DCIS

  Paszat L, Sutradhar R, Zhou L, Nofech-Mozes S, Rakovitch E. Clin Breast Cancer. 2019; 19(1):35-46. Epub 2018 Jul 27.

• Evolution in the risk of cataract surgical complications among patients exposed to tamsulosin: a population-based study

  Campbell RJ, El-Defrawy SR, Gill SS, Whitehead M, de LP Campbell E, Hooper PL, Bell CM, ten Hove MW. Ophthalmology. 2019; 126(4):490-6. Epub 2019 Jan 14.

• Patterns of adjuvant care and outcomes of elderly women with stage I breast cancer after breast-conserving surgery: a population-based analysis

  Goldberg M, Sutradhar R, Paszat L, Whelan TJ, Gu S, Fong C, Rakovitch E. Breast Cancer Res Treat. 2019; 176(3):657-67. Epub 2019 May 10. DOI: 10.1007/s10549-019-05266-0.

• Neurotoxicity among survivors of testicular cancer: a population-based study

  Raphael MJ, Wei X, Karim S, Robinson AG, Bedard PL, Booth CM. Clin Oncol (R Coll Radiol). 2019; 31(9):653-8. Epub 2019 May 2. DOI: 10.1016/j.clon.2019.04.008.

• Multiple foci of microinvasion is associated with an increased risk of invasive local recurrence in women with ductal carcinoma in situ treated with breast-conserving surgery

  Rakovitch E, Sutradhar R, Lalani N, Nofech-Mozes S, Gu S, Goldberg M, Hanna W, Fong C, Paszat L. Breast Cancer Res Treat. 2019; 178(1):169-76. Epub 2019 Jul 19. DOI: https://doi.org/10.1007/s10549-019-05364-z.

• Economic burden and healthcare resource use for thoracic aortic dissections and thoracic aortic aneurysms—a population‐based cost‐of‐illness analysis

  McClure RS, Brogly SB, Lajkosz K, McClintock C, Payne D, Smith HN, Johnson AP. J Am Heart Assoc. 2020; 9(11):e014981. Epub 2020 May 27. DOI: https://doi.org/10.1161/JAHA.119.014981

• Are too many imaging tests being performed in women with an adnexal mass?

  Kupets R, Fernandes K, Miroshnichenko G, Paszat L. J Obstet Gynaecol Can. 2013; 35(3):246-51.

• Upfront small bowel resection for small bowel neuroendocrine tumors with synchronous metastases: a propensity-score matched comparative population-based analysis

  Bennett S, Coburn N, Law C, Mahar A, Zhao H, Singh S, Zuk V, Myrehaug S, Gupta V, Levy J, Hallet J. Ann Surg. 2020; Nov 18 [Epub ahead of print]. DOI: https://doi.org/10.1097/SLA.0000000000004647

• Association between exposure to general versus regional anesthesia and risk of dementia in older adults

  Velkers C, Berger M, Gill SS, Eckenhoff R, Stuart H, Whitehead M, Austin PC, Rochon PA, Seitz D. J Am Geriatr Soc. 2021; 69(1):58-67. Epub 2020 Oct 6. DOI: https://doi.org/10.1111/jgs.16834

• Impact of preoperative echocardiography on surgical delays and outcomes among adults with hip fracture

  Chang JS, Ravi B, Jenkinson RJ, Paterson JM, Huang A, Pincus D. Bone Joint J. 2021; 103-B(2):271-8. Epub 2021 Feb 1. DOI: https://doi.org/10.1302/0301-620X.103B2.BJJ-2020-1011.R1

• Outcomes of abdominal aortic aneurysm repair among patients with rheumatoid arthritis

  Salata K, Almaghlouth I, Hussain MA, de Mestral C, Greco E, Aljabri BA, Mamdani M, Forbes TL, Verma S, Al-Omran M. J Vasc Surg. 2021; 73(4):1261-8.e5. Epub 2020 Sep 17. DOI: https://doi.org/10.1016/j.jvs.2020.08.134

• Predicting postoperative surgical site infection with administrative data: a random forests algorithm

  Petrosyan Y, Thavorn K, Smith G, Maclure M, Preston R, van Walravan C, Forster AJ. BMC Med Res Methodol. 2021; 21(1):179. Epub 2021 Aug 28. DOI: https://doi.org/10.1186/s12874-021-01369-9

• Mental health resource use among patients undergoing curative intent treatment for bladder cancer

  Raphael MJ, Griffiths R, Peng Y, Gupta S, Siemens DR, Soares C, Booth CM. J Natl Cancer Inst. 2021; 113(9):1238-45. Epub 2021 Mar 1. DOI: https://doi.org/10.1093/jnci/djab026

• Geographic disparities in performance of pediatric polysomnography to diagnose obstructive sleep apnea in a universal access health care system

  Radhakrishna D, Knight B, Gozdyra P, Katz SL, Maclusky IB, Murto K, To TM. Int J Pediatr Otorhinolaryngol. 2021; 147:110803. Epub 2021 Jun 18. DOI: https://doi.org/10.1016/j.ijporl.2021.110803

• Textbook outcome and survival in patients with gastric cancer: an analysis of the Population Registry of Esophageal and Stomach Tumours in Ontario (PRESTO)

  Levy J, Gupta V, Amirazodi E, Allen-Ayodabo C, Jivraj N, Jeong Y, Davis LE2, Mahar AL, de Mestral C, Saarela O, Coburn NG; PRESTO Group. Ann Surg. 2022; 275(1):140-8. Epub 2020 Mar 6. DOI: https://doi.org/10.1097/SLA.0000000000003849

• Shifting health care use from hospitalizations and surgeries to outpatient visits in children with inflammatory bowel disease: a population-based cohort study from Ontario, Canada

  Dheri AK, Kuenzig ME, Mack DR, Murthy SK, Kaplan GG, Donelle J, Smith G, Benchimol EI. J Crohns Colitis. 2021; 15(12):1991-2000. Epub 2021 May 21. DOI: https://doi.org/10.1093/ecco-jcc/jjab095

• Predictors of postoperative liver decompensation events after resection in patients with cirrhosis and hepatocellular carcinoma: a population-based study

  Mir ZM, Djerboua M, Nanji S, Flemming JA, Groome PA. Ann Surg Oncol. 2022; 29(1):288-99. Epub 2021 Sep 21. DOI: https://doi.org/10.1245/s10434-021-10801-9

• Risk factors for abdominal reoperations in bariatric patients

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• The impact of hospital surgical volume on healthcare utilization outcomes after pediatric thyroidectomy

  Chesover AD, Eskander A, Griffiths R, Pasternak JD, Pole JD, Wolter NE, Wasserman JD. World J Surg. 2022; 46(5):1082-92. Epub 2022 Feb 3. DOI: https://doi.org/10.1007/s00268-022-06456-6

• Trends in postoperative opioid prescribing in Ontario between 2013 and 2019: a population-based cohort study

  Jivraj NK, Ladha K, Goel A, Hill A, Wijeysundera DN, Bateman BT, Wunsch H. Can J Anaesth. 2022; 69(8):974-85. Epub 2022 May 10. DOI: https://doi.org/10.1007/s12630-022-02266-5

• Long-term opioid use in seniors following hip and knee arthroplasty in Ontario: a historical cohort study

  Johnson A, Milne B, Pasquali M, Jamali N, Mann S, Gilron I, Moore K, Graves E, Parlow J. Can J Anaesth. 2021; 69(8):934-44. Epub 2021 Aug 25. DOI: https://doi.org/10.1007/s12630-021-02091-2

• Measuring the predictive accuracy of preoperative clinical frailty instruments applied to electronic health data in older patients having emergency general surgery: a retrospective cohort study

  Grudzinski AL, Aucoin S, Talarico R, Moloo H, Lalu MM, McIsaac DI. Ann Surg. 2022; Sep 21 [Epub ahead of print]. DOI: https://doi.org/10.1097/SLA.0000000000005718

• Comparing the predictive accuracy of frailty instruments applied to preoperative electronic health data for adults undergoing noncardiac surgery

  Grudzinski AL, Aucoin S, Talarico R, Moloo H, Lalu MM, McIsaac DI. Br J Anaesth. 2022; 129(4):506-14. Epub 2022 Aug 28. DOI: https://doi.org/10.1016/j.bja.2022.07.019

• Association of topical glaucoma medications with lacrimal drainage obstruction and eyelid malposition

  Quinn MP, Kratky V, Whitehead M, Gill SS, McIsaac MA, Campbell RJ. Eye (Lond). 2022; Dec 6 [Epub ahead of print]. DOI: https://doi.org/10.1038/s41433-022-02322-w

• The association between hospital high-volume anesthesiology care and patient outcomes for complex gastrointestinal cancer surgery: a population-based study

  Hallet J, Jerath A, Perez d’Empaire P, Eskander A, Carrier F, McIsaac DI, Turgeon A, Idestrup C, Flexman AM, Lorello G, Darling G, Kidane B, Kaliwal Y, Barabash V, Coburn N, Sutradhar R. Ann Surg. 2022; Oct 27 [Epub ahead of print]. DOI: https://doi.org/10.1097/SLA.0000000000005738

• Association between obesity and chronic kidney disease: multivariable Mendelian randomization analysis and observational data from a bariatric surgery cohort

  Nguyen A, Khafagy R, Gao Y, Meerasa A, Roshandel D, Anvari M, Lin B, Cherney DZI, Farkouh ME, Shah BR, Paterson AD, Dash S. Diabetes. 2023; Jan 19 [Epub ahead of print]. DOI: https://doi.org/10.2337/db22-0696

• Timing of paediatric orchidopexy in universal healthcare systems: international administrative data cohort study

  Jay MA, Arat A, Wijlaars L, Ajetunmobi O, Fitzpatrick T, Lu H, Lei S, Skerritt C, Goldfeld S, Gissler M, Gunnlaugsson G, Jónsson SH, Hjern A, Guttmann A, Gilbert R. BJS Open. 2020; 4(6):1117-24. Epub 2020 Jul 24. DOI: https://doi.org/10.1002/bjs5.50329

• Derivation and validation of predictive indices for cardiac readmission after coronary and valvular surgery – a multicenter study

  Sun LY, Chu A, Tam DY, Wang X, Fang J, Austin PC, Feindel CH, Alexopoulos V, Tusevljak N, Rocha R, Ouzounian M, Woodward G, Lee DS; CorHealth Ontario Cardiac Surgery Risk Adjustment Task Force. Am Heart J Plus. 2023; 28:100285. Epub 2023 Mar 22. DOI: https://doi.org/10.1016/j.ahjo.2023.100285

• Risks of preoperative anemia in women undergoing elective hysterectomy and myomectomy

  Murji A, Lam M, Allen B, Richard L, Sharif SZ, Austin PC, Callum J, Lipscombe L. Am J Obstet Gynecol. 2019; 221(6):629 e1-18. Epub 2019 Jul 13. DOI: https://doi.org/10.1016/j.ajog.2019.07.018

• How many arterial grafts are enough? A population-based study of midterm outcomes

  Guru V, Fremes SE, Tu JV. J Thorac Cardiovasc Surg. 2006; 131(5):1021-8. Epub 2006 Apr 25.

• Preoperative testing before low-risk surgical procedures

  Kirkham KR, Wijeysundera DN, Pendrith C, Ng R, Tu JV, Laupacis A, Schull MJ, Levinson W, Bhatia RS. CMAJ. 2015; 187(11):E349-58. Epub 2015 Jun 1.

• Association of cataract surgical outcomes with late surgeon career stages: a population-based cohort study

  Campbell RJ, El-Defrawy SR, Gill SS, Whitehead M, Campbell ELP, Hooper PL, Bell CM, ten Hove MW. JAMA Ophthalmol. 2019; 137(1):58-64. Epub 2018 Oct 11.

• Influence of surgical procedures and general anesthesia on child development before primary school entry among matched sibling pairs

  O'Leary JD, Janus M, Duku E, Wijeysundera DN, To T, Li P, Maynes JT, Faraoni D, Crawford MW. JAMA Pediatr. 2019; 173(1):29-36. Epub 2018 Nov 5.

• Medical Practice Variations

  Editors: Johnson A, Stukel TA. April 2016.

• Days alive and out of hospital: validation of a patient-centered outcome for perioperative medicine

  Jerath A, Austin PC, Wijeysundera DN. Anesthesiology. 2019; 131(1):84-93. Epub 2019 May 3. DOI: 10.1097/ALN.0000000000002701.

• Association between surgical approach and major surgical complications in patients undergoing total hip arthroplasty

  Pincus D, Jenkinson R, Paterson M, Leroux T, Ravi B. JAMA. 2020; 323(11):1070-76. Epub 2020 Mar 17. DOI: https://doi.org/10.1001/jama.2020.0785

• Association of surgical intervention for adhesive small-bowel obstruction with the risk of recurrence

  Behman R, Nathens AB, Mason S, Byrne JP, Hong NL, Pechlivanoglou P, Karanicolas P. JAMA Surg. 2019; 154(5):413-20. Epub 2019 Jan 30. DOI: 10.1001/jamasurg.2018.5248.

• Venous thromboembolism in patients discharged from the emergency department with ankle fractures: a population-based cohort study

  Grewal K, Atzema CL, Sutradhar R, Everett K, Horner D, Thompson C, Theodoropoulos J, Borgundvaag B, McLeod SL, de Wit K. Ann Emerg Med. 2022; 79(1):35-47. Epub 2021 Sep 15. DOI: https://doi.org/10.1016/j.annemergmed.2021.06.017

• Variation in revascularisation use and outcomes of patients in hospital with acute myocardial infarction across six high income countries: cross sectional cohort study

  Cram P, Hatfield LA, Bakx P, Banerjee A, Fu C, Gordon M, Heine R, Huang N, Ko D, Lix LM, Novack V, Pasea L, Qiu F, Stukel TA, de Groot CU, Yan L, Landon B. BMJ. 2022; 377:e069164. Epub 2022 May 4. DOI: https://doi.org/10.1136/bmj-2021-069164

• Renal colic imaging practice patterns in Ontario: a population-based study

  Jenkins D, Hosier G, Whitehead M, Shellenberger J, McGregor T, Siemens DR. Can Urol Assoc J. 2023; Mar 20 [Epub ahead of print]. DOI: https://doi.org/10.5489/cuaj.8225

• April 2017

  Infographics

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  • Low cancer screening rates among organ transplant patients in Ontario

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  ICES in the News

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  Langer JC, To T. Pediatrics. 2004; 113(5):1342-7.

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  Urbach DR, Baxter NN. Qual Saf Health Care. 2004; 13(5):379-83.

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  Rose DK, Cohen MM, DeBoer DP. Anesthesiology. 1996; 84(4):772-81.

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  Sampalis JS, Tamim H, Nikolis A, Lavoie A, Williams JI. Accid Anal Prev. 1996; 28(6):675-84.

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  Karkouti K, Rose DK, Ferris LE, Wigglesworth DF, Meisami-Fard T, Lee H. Can J Anaesth. 1996; 43(6):554-9.

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• July 2017

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  Jiang L, Gilbert J, Langley H, Moineddin R, Groome PA. Br J Cancer. 2015; 112(11):1744-50. Epub 2015 May 5.

• The association of adjuvant therapy with survival at the population level following pancreatic adenocarcinoma resection

  Kagedan DJ, Raju RS, Dixon ME, Shin E, Li Q, Liu N, Elmi M, El-Sedfy A, Paszat L, Kiss A, Earle CC, Mittmann N, Coburn NG. HPB (Oxford). 2016; 18(4):339-47. Epub 2016 Feb 9.

• Inhaled anticholinergic drug therapy and the risk of acute urinary retention in chronic obstructive pulmonary disease: a population-based study

  Stephenson A, Seitz D, Bell CM, Gruneir A, Gershon AS, Austin PC, Fu L, Anderson GM, Rochon PA, Gill SS. Arch Intern Med. 2011; 171(10):914-20.

• A matched-cohort population study of reoperation after meniscal repair with and without concomitant anterior cruciate ligament reconstruction

  Wasserstein D, Dwyer T, Gandhi R, Austin PC, Mahomed N, Ogilvie-Harris D. Am J Sports Med. 2013; 41(2):349-55. Epub 2012 Dec 20.

• Depression and use of health care services in patients with advanced cancer

  Lo C, Calzavara A, Kurdyak P, Barbera L, Shepherd F, Zimmermann C, Moore MJ, Rodin G. Can Fam Physician. 2013; 59(3):e168-74. Epub 2013 Mar 13.

• Impact of provider volume on operative mortality after radical cystectomy in a publicly funded healthcare system

  Kulkarni GS, Urbach DR, Austin PC, Fleshner NE, Laupacis A. Can Urol Assoc J. 2013; 7(11-12):425-9.

• October 2017

  Infographics

  • Chronic Obstructive Pulmonary Disease in Ontario
  • Impact of pneumococcal vaccination on pneumonia hospitalizations and related costs in Ontario
  • Gabapentin, opioids and the risk of opioid-related death

  ICES Research Video

  • Natasha Saunders on study showing one-third lower risk of suicide or self-harm among immigrant children and youth

  ICES in the News

  • Antipsychotics common for adults with intellectual and developmental disabilities
  • Association between immigrant status and end-of-life care in Ontario, Canada
  • Effectiveness of a financial incentive to physicians for timely follow-up after hospital discharge

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  • Impact of restricting diagnostic imaging reimbursement for uncomplicated low back pain in Ontario: a population-based interrupted time series analysis
  • Temporal trends in cardiovascular disease risk factor profiles in a population-based schizophrenia sample: a repeat cross-sectional study
  • Comparative safety of direct oral anticoagulants and warfarin in venous thromboembolism: multicentre, population based, observational study
  • False-positive newborn screening for cystic fibrosis and health care use
  • Economic impact of subsequent depression in patients with a new diagnosis of stable angina: a population-based study
  • Are we Choosing Wisely in lymphoma? Excessive use of surveillance CT imaging in patients with diffuse large B-cell lymphoma (DLBCL) in long-term remission
  • Real-world health care utilization and effectiveness of omalizumab for the treatment of severe asthma
  • Effect of preoperative geriatric evaluation on outcomes after elective surgery: a population-based study

• Are complication rates for elective primary total hip arthroplasty in Ontario related to surgeon and hospital volumes? A preliminary investigation

  Kreder HJ, Williams JI, Jaglal S, Hu R, Axcell T, Stephen D. Can J Surg. 1998; 41(6):431-7.

• Comparative cost analysis of myringotomy with insertion of ventilation tubes in Ontario and British Columbia

  Coyte PC, Asche CV, Ho E, Brassard T, Friedberg J. J Otolaryngol. 1998; 27(2):69-75.

• Determinants of outcome after carotid endarterectomy

  Kucey DS, Bowyer B, Iron K, Austin P, Anderson G, Tu JV. J Vasc Surg. 1998; 28(6):1051-8.

• Development of a patient decision aid for choice of surgical treatment for breast cancer

  Sawka CA, Goel V, Mahut CA, Taylor GA, Thiel EC, O'Connor AM, Ackerman I, Burt JH, Gort EH. Health Expect. 1998; 1(1):23-36.

• Hospitalizations for back and neck problems: a comparison between the Province of Ontario and Washington State

  Taylor VM, Anderson GM, McNeney B, Diehr P, Lavis JN, Deyo RA, Bombardier C, Malter A, Axcell T. Health Serv Res 1998; 33(4 Pt 1):929-45.

• Trends in hospital use for mechanical neck and back problems in Ontario and the United States: discretionary care in different health care systems

  Lavis JN, Malter A, Anderson GM, Taylor VM, Deyo RA, Bombardier C, Axcell T, Kreuter W. CMAJ. 1998; 158(1):29-36.

• The impact of increasing hospital volume on 90-day postoperative outcomes following pancreaticoduodenectomy

  Kagedan DJ, Goyert N, Li Q, Paszat L, Kiss A, Earle CC, Karanicolas PJ, Wei AC, Mittmann N, Coburn NG. J Gastrointest Surg. 2017; 21(3):506-15.

• The value of complementing administrative data with abstracted information on smoking and obesity: a study in kidney cancer

  Nayan M, Hamilton RJ, Finelli A, Austin PC, Kulkarni GS, Juurlink DN. Can Urol Assoc J. 2017; 11(6):167-71.

• Temporal changes in the outcomes of acute myocardial infarction in Ontario, 1992-1996

  Tu JV, Naylor CD, Austin P. CMAJ. 1999; 161(10):1257-61.

• Trends in clinical and economic outcomes of coronary angioplasty from 1992 to 1995: a population-based analysis

  Cohen EA, Young W, Slaughter PM, Oh P, Naylor CD. Am Heart J. 1999; 137(6):1012-8.

• Shorter waiting times for hip and knee replacement on the horizon

  Williams JI, Mohamed N, Chapeskie KK. Hosp Q. 2000; 4(2):21.

• November 2017

  Call for abstracts: IPDLN 2018 Conference

  Infographics

  • Two-thirds of children with concussions not receiving medical follow-ups
  • People with developmental disabilities and mental illness have twice the risk of hospital readmissions
  • Inhaled corticosteroids do not increase risk of fracture in children with asthma
  • People with mental illness or addictions have higher health care needs and costs

  ICES in the News

  • Hip fracture surgery after more than 24 hours associated with increased risk of death and other complications
  • Direct medical costs of motorcycle crashes in Ontario
  • Flu vaccine prevents hospitalization in children

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  • Big data and population health: focusing on the health impacts of the social, physical, and economic environment
  • Indigenous health data and the path to healing
  • Derivation and external validation of prediction models for advanced chronic kidney disease following acute kidney injury
  • Ethnic differences in mental health and race-based data collection
  • Predicting psychiatric readmission: sex-specific models to predict 30-day readmission following acute psychiatric hospitalization
  • The medical care of male and female youth who die by suicide: a population-based case control study
  • Mortality in infants affected by preterm birth and severe small-for-gestational age birth weight
  • Increased coronary heart disease and stroke hospitalisations from ambient temperatures in Ontario
  • Changes in the dispensing of opioid medications in Canada following the introduction of a tamper-deterrent formulation of long-acting oxycodone
  • Variations in use of optimal medical therapy in patients with nonobstructive coronary artery disease
    
    
    

• The role of adjuvant adenoidectomy and tonsillectomy in the outcome of the insertion of tympanostomy tubes

  Coyte PC, Croxford R, McIsaac W, Feldman W, Friedberg J. N Engl J Med. 2001; 344(16):1188-95.

• Effect of socioeconomic status on treatment and mortality after stroke

  Kapral MK, Wang H, Mamdani M, Tu JV. Stroke. 2002; 33(1):268-73.

• Waiting times, revascularization modality, and outcomes after acute myocardial infarction at hospitals with and without on-site revascularization facilities in Canada

  Alter DA, Tu JV, Austin PC, Naylor CD. J Am Coll Cardiol. 2003; 42(3):410-9.

• December 2017

  Infographics

  • Supply of Ontario physicians providing comprehensive care lower than thought
  • Highlighting our data partnership with Immigration, Refugees and Citizenship Canada: A population-based study of postpartum mental health service use by immigrant women in Ontario, Canada
  • Highlighting our data partnership with Immigration, Refugees and Citizenship Canada: Impact of immigration status on cancer outcomes in Ontario, Canada

  ICES research video series

  • Laura Rosella on creating a new population risk tool for predicting high-cost users of health care

  ICES in the News

  • Cardiovascular and neuropsychiatric events following varenicline use for smoking cessation
  • Financial incentives did not increase psychiatric follow-up care

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  • The role of mental health and addiction among high-cost patients: a population-based study
  • Association of atrial fibrillation and oral anticoagulant use with perioperative outcomes after major noncardiac surgery
  • Melanoma patterns of care in Ontario: a call for a strategic alignment of multidisciplinary care
  • The relationship between cardiologist care and clinical outcomes in patients with new-onset atrial fibrillation
  • Population-based study to determine the health system costs of using the 21-gene assay
  • Perioperative chemotherapy for bladder cancer in the general population: Are practice patterns finally changing?
  • Does access to end-of-life homecare nursing differ by province and community size? 
  • Using newborn screening analytes to identify cases of neonatal sepsis

• Increased use of low anterior resection for veterans with rectal cancer

  Abraham NS, Davila JA, Rabeneck L, Berger DH, El-Serag HB. Aliment Pharmacol Ther. 2005; 21(1):35-41.

• Surgeon specialty and operative mortality with lung resection

  Goodney PP, Lucas FL, Stukel TA, Birkmeyer JD. Ann Surg. 2005; 241(1):179-84.

• Proliferation of cardiac technology in Canada: a challenge to the sustainability of Medicare

  Alter DA, Stukel TA, Newman A. Circulation. 2006; 113(3):380-7.

• Practice patterns in the care of acute Achilles tendon ruptures: Is there an association with level I evidence?

  Sheth U, Wasserstein D, Jenkinson R, Moineddin R, Kreder H, Jaglal S. Bone Joint J. 2017; 99-B(12):1629-36. Epub 2017 Dec 6.

• The impact of the Choosing Wisely Campaign in urology

  Welk B, Winick-Ng J, McClure JA, Lorenzo AJ, Kulkarni G, Ordon M. Urology. 2018; 116:81-6. Epub 2018 Mar 20.

• Is being diagnosed at a dedicated breast assessment unit associated with a reduction in the time to diagnosis for symptomatic breast cancer patients?

  Jiang L, Gilbert J, Langley H, Moineddin R, Groome PA. Eur J Cancer Care (Engl). 2018; 27(4):e12864. Epub 2018 Jun 5.

• Exclusion of patients with sequential primary total joint arthroplasties from arthroplasty outcome studies biases outcome estimates: a retrospective cohort study

  Ravi B, Croxford R, Hawker G. Osteoarthritis Cartilage. 2013; 21(12):1841-8. Epub 2013 Sep 24.

• Introduction of surgical safety checklists in Ontario, Canada

  Urbach DR, Govindarajan A, Saskin R, Wilton AS, Baxter NN. N Engl J Med. 2014; 370(11):1029-38. Epub 2014 Mar 13.

• Adherence to guideline-recommended process measures for squamous cell carcinoma of the head and neck in Ontario: impact of surgeon and hospital volume

  Eskander A, Monteiro E, Irish J, Gullane P, Gilbert R, de Almeida J, Brown D, Freeman J, Urbach DR, Goldstein DP. Head Neck. 2016; 38(Suppl 1):E1987-92. Epub 2016 Feb 1.

• Negative predictive value of preoperative computed tomography in determining pathologic local invasion, nodal disease, and abdominal metastases in gastric cancer

  Kagedan DJ, Frankul F, El-Sedfy A, McGregor C, Elmi M, Zagorski B, Dixon ME, Mahar AL, Vasilevska-Ristovska J, Helyer L, Rowsell C, Swallow CJ, Law CH, Coburn NG. Curr Oncol. 2016; 23(4):273-9.

• A population-based study on NIFTP incidence and survival: Is NIFTP really a "benign" disease?

  Eskander A, Hall SF, Manduch M, Griffiths R, Irish JC. Ann Surg Oncol. 2019; 26(5):1376-84. Epub 2019 Jan 28.

• Direct health-care costs for children diagnosed with genetic diseases are significantly higher than for children with other chronic diseases

  Marshall DA, Benchimol EI, MacKenzie A, Duque DR, MacDonald KV, Hartley T, Howley H, Hamilton A, Gillespie M, Malam F, Boycott KM. Genet Med. 2019; 21(5):1049-57. Epub 2018 Sep 24.

• Current use of domperidone and co prescribing of medications that increase its arrhythmogenic potential among older adults: a population-based cohort study in Ontario, Canada.

  Rojas-Fernandez C, Stephenson AL, Fischer HD, Wang X, Mestre T, Hutson JR, Pondal M, Lee DS, Rochon PA, Marras C. Drugs Aging. 2014; 31(11):805-13. Epub 2014 Sep 17.

• Derivation and validation of a generalizable preoperative frailty index using population-based health administrative data

  McIsaac DI, Wong CA, Huang A, Moloo H, van Walraven C. Ann Surg. 2019; 270(1):102-8. Epub 2018 Apr 18.

• August 2019

  Infographics

  • High-performing physicians are more likely to participate in a research study: findings from a quality improvement study
  • Prevalence of inappropriateness of parenteral vitamin B12 administration in Ontario Canada
  • Association of mirabegron with the risk of arrhythmia in adult patients 66 years or older—a population-based cohort study
  • Antipsychotic initiation among adults with intellectual and developmental disabilities in Ontario: a population-based cohort study

  ICES in the News

  • Association of primary care continuity with outcomes following transition to adult care for adolescents with severe mental illness
  • A 15-year population-based investigation of sexual assault cases across the province of Ontario, Canada, 2002–2016
  • Health outcomes of young children born to mothers who received 2009 pandemic H1N1 influenza vaccination during pregnancy: retrospective cohort study
  • Rates of emergency department visits attributable to alcohol use in Ontario from 2003 to 2016: a retrospective population-level study

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  • End-of-life care in individuals with respiratory diseases: a population study comparing the dying experience between those with chronic obstructive pulmonary disease and lung cancer
  • Regional variation of premature mortality in Ontario, Canada: a spatial analysis
  • The time-varying effect of radiotherapy after breast-conserving surgery for DCIS
  • The impact of the long-term care homes act and public reporting on physical restraint and potentially inappropriate antipsychotic use in Ontario's long-term care homes
  • Can administrative data improve the performance of cancer clinical trial economic analyses?
  • Comparison of outcomes in elective endovascular aortic repair vs open surgical repair of abdominal aortic aneurysms

• Rivaroxaban vs. low molecular weight heparin for the prevention of venous thromboembolism after hip or knee arthroplasty: a cohort study

  Lazo-Langner A, Fleet JL, McArthur E, Garg AX. J Thromb Haemost. 2014; 12(10):1626-35. Epub 2014 Jul 28.

• Outcomes of operative and nonoperative treatment of thoracic empyema: a population based study

  Nayak R, Brogly SB, Lajkosz K, Lougheed MD, Petsikas D. Ann Thorac Surg. 2019; 108(5):1456-63. Epub 2019 Jul 26. DOI: https://doi.org/10.1016/j.athoracsur.2019.05.090.

• November 2019

  Infographics

  • Association between neighborhood walkability and predicted 10-year cardiovascular disease risk: the Cardiovascular Health in Ambulatory Care Research Team (CANHEART) cohort
  • Risk of involuntary admission among first-generation ethnic minority groups with early psychosis: a retrospective cohort study using health administrative data
  • Perinatal outcomes for untreated women with gestational diabetes by IADPSG criteria: a population-based study
  • Hypertrophic cardiomyopathy-related sudden cardiac death in young people in Ontario

  Research Video

  • One-year home-time and mortality after thrombolysis compared with nontreated patients in a propensity-matched analysis

  ICES in the News

  • The uptake of the pharmacy-dispensed naloxone kit program in Ontario: A population-based study
  • An opioid prescription for men undergoing minor urologic surgery is associated with an increased risk of new persistent opioid use
  • Clinical effectiveness of cardiac noninvasive diagnostic testing in patients discharged from the emergency department for chest pain
  • Uptake of colorectal cancer screening by physicians is associated with greater uptake by their patients

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  • 90-90-90 for everyone? Access to HIV care and treatment for people with HIV who experience imprisonment in Ontario, Canada
  • Association between angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, and suicide
  • Potential impact of changes in administrative database coding methodology on research and policy decisions: an example from the Ontario Health Insurance Plan
  • Pitfalls in measuring temporal trends for late diagnosis of viral hepatitis
  • Incremental healthcare utilisation and costs among new senior high-cost users in Ontario, Canada: a retrospective matched cohort study
  • Identifying Ontario geographic regions to assess adults who present to hospital with laboratory-defined conditions: a descriptive study
  • Inequity in access to transcatheter aortic valve replacement: a pan-Canadian evaluation of wait-times

• Use and overuse of diagnostic neck ultrasound in Ontario: retrospective population-based cohort study

  Hall SF, Griffiths R. Can Fam Physician. 2020; 66(2):e62-8. Epub 2020 Feb 1.

• Association of tympanostomy tubes with future assistive hearing devices—a population based study

  Beyea JA, Cooke B, Rosen E, Nguyen P. BMC Pediatr. 2020; 20(1):76. Epub 2020 Feb 18. DOI: https://doi.org/10.1186/s12887-020-1977-6

• Trends in survival based on treatment modality in patients with pancreatic cancer: a population-based study

  Shakeel S, Finley C, Akhtar-Danesh G, Seow H, Akhtar-Danesh N. Curr Oncol. 2020; 27(1):e1–8. Epub 2020 Feb 1. DOI: http://dx.doi.org/10.3747/co.27.5211

• Fractionation in adjuvant radiotherapy for invasive breast cancer and ductal carcinoma in situ in Ontario, Canada from 2009 to 2015

  Chan S, Sutradhar R, Yao Z, Chow E, Lee J, Wan BA, Paszat L. Breast J. 2020; 26(4):602-16. Epub 2019 Sep 12. DOI: 10.1111/tbj.13515.

• August 2020

  Infographics

  • Death and long-term disability after gun injury: a cohort analysis
  • Patient-level characteristics and inequitable access to inpatient electroconvulsive therapy for depression: a population-based cross-sectional study
  • Trends in the medical use of synthetic cannabinoids among older adults in Ontario, Canada

  ICES in the News

  • COVID-19 Laboratory Testing in Ontario: Patterns of Testing and Characteristics of Individuals Tested, as of April 30, 2020
  • Clinical effectiveness of cardiac noninvasive diagnostic testing in outpatients evaluated for stable coronary artery disease
  • Maternal cannabis use in pregnancy and child neurodevelopmental outcomes

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  • Sex- and age-specific differences in COVID-19 testing, cases and outcomes: a population-wide study in Ontario, Canada
  • Direct and indirect pathways between low-income status and becoming a high-cost healthcare user in Ontario, Canada: a mediation analysis of health risk behaviors
  • Quality of antenatal care for women who experience imprisonment in Ontario, Canada
  • Persistent socioeconomic inequalities in location of death and receipt of palliative care: a population-based cohort study
  • Material deprivation and access to cancer care in a universal health care system
  • Receipt of routine preventive care among infant daughters and sons of immigrant mothers in Ontario, Canada: a retrospective cohort study
  • Population trends in lobular carcinoma of the breast: the Ontario experience
  • Severe nutritional complications after bariatric surgery in Ontario adults: a population-based descriptive study
  • Health care use and costs of children, adolescents, and young adults with somatic symptom and related disorders

• Diagnosis and treatment of childhood Intussusception from 1997 to 2016: a population-based study

  Kolar M, Pilkington M, Winthrop A, Theivendram A, Lajkosz K, Brogly SB. J Pediatr Surg. 2020; 55(8):1562-9. Epub 2020 Feb 12.

• November 2020

  Infographics

  • Life expectancy and health-adjusted life expectancy in people with inflammatory bowel disease
  • Utilisation and outcomes of allogeneic hematopoietic cell transplantation in Ontario, Canada, and New York State, USA: a population-based retrospective cohort study
  • Patient-centered time-at-home outcomes in older adults after surgical cancer treatment

  ICES in the News

  • COVID-19 in Ontario: Notable findings for the week of November 1-7, 2020
  • Prenatal hepatitis B screening, and hepatitis B burden among children, in Ontario: a descriptive study
  • Association between adherence to fractional flow reserve treatment thresholds and major adverse cardiac events in patients with coronary artery disease

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  • Incidental detection, imaging modalities and temporal trends of differentiated thyroid cancer in Ontario: a population-based retrospective cohort
  • The associations between direct and delayed critical care unit admission with mortality and readmissions among patients with heart failure
  • Increasing wait-time mortality for severe aortic stenosis: a population-level study of the transition in practice from surgical aortic valve replacement to transcatheter aortic valve replacement
  • Declining use of red blood cell transfusions for gastrointestinal cancer surgery: a population-based analysis
  • Regional health care services and rates of lower extremity amputation related to diabetes and peripheral artery disease: an ecological study
  • Use of cardiac noninvasive testing after emergency department discharge: association of hospital network testing intensity and outcomes in Ontario, Canada
  • Comorbidities before and after the diagnosis of rheumatoid arthritis: a matched longitudinal study
  • Coexistence of clinically significant obstructive sleep apnea with physician-diagnosed asthma or chronic obstructive pulmonary disease: a population study of prevalence and mortality

• December 2020

  Infographics

  • Mortality among patients with frequent emergency department use for alcohol-related reasons in Ontario: a population-based cohort study
  • Association between ABO and Rh blood groups and SARS-CoV-2 infection or severe COVID-19 illness: a population-based cohort study
  • Diagnostic testing in long-term care and resident emergency department visits: a retrospective cohort study

  ICES in the News

  • COVID-19 in Ontario
  • Life expectancy and health-adjusted life expectancy in people with inflammatory bowel disease

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  • Association between neuraxial anaesthesia or general anaesthesia for lower limb revascularisation surgery in adults and clinical outcomes: population based comparative effectiveness study
  • Economic burden of epilepsy in children: a population-based matched cohort study in Canada
  • Combined associations of work and leisure time physical activity on incident diabetes risk
  • Mental health and addictions system performance in Ontario: an updated scorecard, 2009-2017
  • Higher-dose sitagliptin and the risk of congestive heart failure in older adults with CKD
  • Feminization of the rheumatology workforce: a longitudinal evaluation of patient volumes, practice sizes and physician remuneration
  • The LENT index predicts 30 day outcomes following hospitalization for heart failure
  • Sex-specific temporal trends in ambulatory heart failure incidence, mortality and hospitalisation in Ontario, Canada from 1994 to 2013: a population-based cohort study

• January 2021

  Event

  • ICES Winter Forum

  Infographics

  • Testing, infection and complication rates of COVID-19 among people with a recent history of homelessness in Ontario, Canada: a retrospective cohort study
  • Impact of geography on care delivery and survival for noncurable pancreatic adenocarcinoma: a population-based analysis
  • Patient-reported symptom burden as a predictor of emergency department use and unplanned hospitalization in head and neck cancer: a longitudinal population-based study

  ICES in the News

  • A health care system besieged by COVID?
  • COVID-19 in Ontario

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  • Medication use and its impact on high-cost health care users among older adults: protocol for the population-based matched cohort HiCOSTT study
  • Quality and safety in long-term care in Ontario: the impact of language discordance
  • Over half of seniors who start oral bisphosphonate therapy are exposed for 3 or more years: novel rolling window approach and patterns of use
  • Statin exposure and risk of heart failure after anthracycline- or trastuzumab-based chemotherapy for early breast cancer: a propensity score-matched cohort study
  • Access to bariatric surgery among older patients in a publicly funded regionalized care system
  • Mental health services provision in primary care and emergency department settings: analysis of blended fee-for-service and blended capitation models in Ontario, Canada
  • Correlates of non-adherence to breast, cervical, and colorectal cancer screening among screen-eligible women: a population-based cohort study in Ontario, Canada
  • Effect of socio-demographic and health factors on the association between multimorbidity and acute care service use: population-based survey linked to health administrative data

• Identifying children and youth with autism spectrum disorder in electronic medical records: examining health system utilization and comorbidities

  Brooks JD, Bronskill SE, Fu L, Saxena FE, Arneja J, Pinzaru VB, Anagnostou E, Nylen K, McLaughlin J, Tu K. Autism Res. 2021; 14(2):400-10. Epub 2020 Oct 24. DOI: https://doi.org/10.1002/aur.2419

• February 2021

  Infographics

  • Alive and at home: five-year outcomes in older adults following emergency general surgery
  • Stroke incidence by sex across the lifespan
  • Sepsis-associated mortality, resource use, and healthcare costs: a propensity-matched cohort study

  ICES in the News

  • COVID-19 in Ontario: Notable findings for the week of February 7-11, 2021
  • Shifts in office and virtual primary care during the early COVID-19 pandemic in Ontario, Canada
  • Prevalence of prenatal opioid exposure in Ontario, Canada, 2014-2019
  • Association of preexisting disability with severe maternal morbidity or mortality in Ontario, Canada

  You may also be interested in...

  • Geographic impact on access to care and survival for non-curative esophagogastric cancer: a population-based study
  • An association between cardiologist billing patterns, healthcare utilization and outcomes in cardiac patients
  • Increased mortality for individuals with giant cell arteritis: a population-based study
  • Impact of pretransplant and new-onset diabetes after transplantation on the risk of major adverse cardiovascular events in kidney transplant recipients: a population-based cohort study
  • A population-based study comparing outcomes for patients with metastatic castrate resistant prostate cancer treated by urologists or medical oncologists with first line abiraterone acetate or enzalutamide
  • Increased incidence of inflammatory bowel disease after Hirschsprung disease: a population-based cohort study
  • Adolescents and young adult acute myeloid leukemia outcomes at pediatric versus adult centers: a population-based study
  • Accidental injury, self-injury and assault among children of women with schizophrenia: a population-based cohort study

• Reoperation cascade in postmastectomy breast reconstruction and its associated factors: results from a long‐term population‐based study

  Roberts A, Baxter NN, Sutradhar R, Lau C, Zhong T. J Surg Oncol. 2020; 122(7):1300-6. Epub 2020 Sep 15. DOI: https://doi.org/10.1002/jso.26166

• Assessing the validity of administrative health data for the identification of children and youth with autism spectrum disorder in Ontario

  Brooks JD, Arneja J, Fu L, Saxena FE, Tu K, Pinzaru VB, Anagnostou E, Nylen K, Saunders NR, Lu H, McLaughlin J, Bronskill SE. Autism Res. 2021; 14(5):1037-45. Epub 2021 Mar 10. DOI: https://doi.org/10.1002/aur.2491

• July 2021

  Infographics

  • Surgery and the subtype of inflammatory bowel disease impact the risk of venous thromboembolism after hospital discharge
  • Primary care provider and child characteristics associated with age of diagnosis of autism spectrum disorder: a population-based cohort study
  • Risk of serious medical events in patients with depression treated with electroconvulsive therapy: a propensity score-matched, retrospective cohort study

  ICES in the News

  • Development and validation of a predictive algorithm for risk of dementia in the community setting
  • Predicting death in home care users: derivation and validation of the Risk Evaluation for Support: Predictions for Elder-Life in the Community Tool (RESPECT)
  • Prevalence of winter migration to warmer destinations among Ontarians (“snowbirds”) and patterns of their use of health care services: a population-based analysis
  • COVID-19 in Ontario: Highlights for the week of July 4-10, 2021
  • Effectiveness of COVID-19 vaccines against variants of concern, Canada

  You may also be interested in...

  • Measuring the impact of the COVID-19 pandemic on organized cancer screening and diagnostic follow-up care in Ontario, Canada: a provincial, population-based study
  • Effect of a health system payment and quality improvement programme for tonsillectomy in Ontario, Canada: an interrupted time series analysis
  • Depression-related weight change and incident diabetes in a community sample
  • Health services use by children identified as heterozygous hemoglobinopathy mutation carriers via newborn screening
  • Characteristics and outcomes of women developing heart failure after early stage breast cancer chemotherapy: a population-based matched cohort study
  • Childhood seizures after prenatal exposure to maternal influenza infection: a population-based cohort study from Norway, Australia and Canada
  • Specialist care in individuals with asthma who required hospitalization: a retrospective population-based study
  • NAFLD and alcohol-related liver disease will be responsible for almost all new diagnoses of cirrhosis in Canada by 2040

• September 2021

  Infographics

  • Understanding COVID-19 risk in patients with immune mediated inflammatory diseases: a population-based analysis of SARS-CoV-2 testing
  • Outcomes and healthcare resource utilization in adult congenital heart disease patients with heart failure
  • Opioid use after outpatient elective general surgery: quantifying the burden of persistent use

  ICES in the News

  • Risk of cancer-specific death for patients diagnosed with neuroendocrine tumors: a population-based analysis
  • COVID-19 positivity rates, hospitalizations and mortality of adults with and without intellectual and developmental disabilities in Ontario, Canada
  • COVID-19 testing and percent positivity in Ontario
  • Comparison of 4-year health care expenditures associated with roux-en-y gastric bypass vs sleeve gastrectomy
  • Prediction of risk of prolonged post-concussion symptoms: Derivation and validation of the TRICORDRR (Toronto Rehabilitation Institute Concussion Outcome Determination and Rehab Recommendations) score

  You may also be interested in...

  • Incidence of chronic immune-mediated inflammatory diseases after diagnosis with Kawasaki disease: a population-based cohort study
  • Association of surgical experience with risk of complication in total hip arthroplasty among patients with severe obesity
  • Incidence, predictors and patterns of care of patients with very severe hypertriglyceridemia in Ontario, Canada: a population-based cohort study
  • Renin-angiotensin-aldosterone system inhibitors and major cardiovascular events and acute kidney injury in patients with coronary artery disease
  • International comparison of spending and utilization at the end of life for hip fracture patients
  • Risk of acute kidney injury after hypertensive disorders of pregnancy: a population-based cohort study
  • Health services utilization prior to amyotrophic lateral sclerosis diagnosis: a province-wide study of individuals treated with riluzole in Ontario, Canada
  • The impact of language on emergency department visits, hospitalizations, and length of stay among home care recipients

• March 2022

  Event

  • ICES Research Forum

  Infographics

  • COVID-19 vaccine coverage and factors associated with vaccine uptake among 23 247 adults with a recent history of homelessness in Ontario, Canada: a population-based cohort study
  • Association between increased dispensing of opioid agonist therapy take-home doses and opioid overdose and treatment interruption and discontinuation

  ICES in the News

  • Impact of cancer surgery slowdowns on patient survival during the COVID-19 pandemic: a microsimulation modelling study
  • Greater opioid use among nursing home residents in Ontario, Canada during the first 2 waves of the COVID-19 pandemic

  You may also be interested in...

  • Healthcare utilization and costs following non-fatal powdered and non-powdered firearm injuries for children and youth
  • Vaccine effectiveness against SARS-CoV-2 infection and severe outcomes in the maintenance dialysis population in Ontario, Canada
  • Health care expenditures among individuals with chronic psychotic disorders in Ontario: an analysis over time
  • Behavioral nudges to improve audit and feedback report opening among antibiotic prescribers: a randomized controlled trial
  • Virtual and in-person visits by Ontario physicians in the COVID-19 era
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• Canada follows the US in the rise of bilateral mastectomies for unilateral breast cancer: a 23-year population cohort study

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• Shape of the association between preoperative hemoglobin level and postoperative outcomes in patients undergoing primary arthroplasty

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• Long-term outcomes of women with large DCIS lesions treated with breast-conserving therapy

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• Variations in coronary revascularization practices and their effect on long-term outcomes

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• Factors associated with adolescent and young adult males with cancer attending fertility consultation: a population-based cohort study in Ontario, Canada

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• Hyperkalemia-related discontinuation of renin-angiotensin-aldosterone system inhibitors and clinical outcomes in CKD: a population-based cohort study

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• Pediatric Clinical Classification System for use in Canadian inpatient settings

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• Mode of conception in patients with endometriosis and adverse pregnancy outcomes: a population-based cohort study

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• Clinical outcomes in younger women hospitalized with an acute myocardial infarction: a contemporary population-level analysis

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• Trends in quality indicators of end-of-life care for women with gynecologic malignancies

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• Characterizing the impact of procedure funding on the Covid-19 generated procedure gap in Ontario: a population-based analysis

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• Total hip arthroplasty versus hemiarthroplasty for treatment of femoral neck fractures: a population-based analysis of practice variation in Ontario, Canada

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• The association between surgical axillary staging, adjuvant treatment use and survival in older women with early stage breast cancer: a population-based study

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• Outcomes of patent foramen ovale transcatheter closure: Should a short aortic rim preclude closure?

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• Efficacy of a guideline-recommended risk-reduction program to improve cardiovascular and limb outcomes in patients with peripheral arterial disease

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• Post-acute pathways among hip fracture patients: a system-level analysis

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• Epidemiology of primary anterior shoulder dislocation requiring closed reduction in Ontario, Canada

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• Secular trends in the incidence and timing of surgical intervention for congenital undescended testis and surgically treated hypospadias in Ontario, Canada between 1997 and 2007

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• Risk of intracranial hemorrhage after carotid artery stenting versus endarterectomy: a population-based study

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• Low-value diagnostic imaging use in the pediatric emergency department in the United States and Canada

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• Predictors of opioid-related adverse pulmonary events among older adults with chronic obstructive pulmonary disease

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• The effect of comorbidity on primary care use during breast cancer chemotherapy: a population-based retrospective cohort study using CanIMPACT data

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• Identifying maternal deaths with the use of hospital data versus death certificates: a retrospective population-based study

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• Persistent post-operative opioid use following hip arthroscopy is common and is associated with pre-operative opioid use and age

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• Differences in health outcomes for high-need high-cost patients across high-income countries

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• Duration of living kidney transplant donor evaluations: findings from 2 multicenter cohort studies

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• Association of preoperative medical consultation with reduction in adverse postoperative outcomes and use of processes of care among residents of Ontario, Canada

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• Differences in treatment patterns and outcomes of acute myocardial infarction for low- and high-income patients in 6 countries

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• Utilization rates of pancreatectomy, radical prostatectomy, and nephrectomy in New York, Ontario, and New South Wales, 2011 to 2018

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