Publication Results (58)

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• Electronic immunization data collection systems: application of an evaluation framework

  Heidebrecht CL, Kwong JC, Finkelstein M, Quan SD, Pereira JA, Quach S, Deeks SL. BMC Med Inform Decis Mak. 2014; 14:5.

• The effect of universal influenza immunization on mortality and health care use

  Kwong JC, Stukel TA, Lim J, McGeer AJ, Upshur RE, Johansen H, Sambell C, Thompson WW, Thiruchelvam D, Marra F, Stevenson LW, Manuel DG. PLoS Med. 2008; 5(10):e211.

• Low rates of influenza immunization in young children under Ontario’s Universal Influenza Immunization Program

  Campitelli MA, Inoue M, Calzavara AJ, Kwong JC, Guttmann A. Pediatrics. 2012; 129(6):e1421-30. Epub 2012 May 14.

• Association between socioeconomic status and adverse events following immunization at 2, 4, 6 and 12 months

  Wilson K, Ducharme R, Hawken S. Hum Vaccin Immunother. 2013; 9(5):1153-7. Epub 2013 Jan 17.

• Safety and utilization of influenza immunization in children with inflammatory bowel disease

  Benchimol EI, Hawken S, Kwong JC, Wilson K. Pediatrics. 2013; 131(6):e1811-20. Epub 2013 May 6.

• The effect of universal influenza immunization on antibiotic prescriptions: an ecological study

  Kwong JC, Maaten S, Upshur RE, Patrick DM, Marra F. Clin Infect Dis. 2009; 49(5):750-6.

• Assessing the completeness of infant and childhood immunizations within a provincial registry populated by parental reporting: a study using linked databases in Ontario, Canada

  Wilson SE, Wilton AS, Young J, Candido E, Bunko A, Buchan SA, Crowcroft NS, Deeks SL, Guttmann A, Halperin SA, Kwong JC, Wilson K, Tu K. Vaccine. 2020; Jun 20 [Epub ahead of print]. DOI: https://doi.org/10.1016/j.vaccine.2020.06.003

• Validation of infant immunization billing codes in administrative data

  Schwartz KL, Tu K, Wing L, Campitelli MA, Crowcroft NS, Deeks SL, Wilson SE, Wilson K, Gemmill I, Kwong JC. Hum Vaccin Immunother. 2015; 11(7):1840-7. Epub 2015 Jun 15.

• Volume matters: physician practice characteristics and immunization coverage among young children insured through a universal health plan

  Guttmann A, Manuel D, Dick PT, To T, Lam K, Stukel TA. Pediatrics. 2006; 117(3):595-602.

• Immunization coverage among young children of urban immigrant mothers: findings from a universal health care system

  Guttmann A, Manuel D, Stukel TA, DesMeules M, Cernat G, Glazier RH. Ambul Pediatr. 2008; 8(3):205-9. Epub 2008 Apr 11.

• The effect of universal influenza immunization on vaccination rates in Ontario

  Kwong JC, Sambell C, Johansen H, Stukel TA, Manuel DG. Health Rep. 2006; 17(2):31-40.

• Vaccine and Immunization Surveillance in Ontario (VISION) — using linked health administrative databases to monitor vaccine safety

  Wilson K, Hawken S, Kwong JC, Deeks SL, Crowcroft NS, Manuel D. Vaccine. 2012; 30(43):6115-20. Epub 2012 Jun 15.

• T-cell receptor excision circle levels and safety of paediatric immunization: a population-based self-controlled case series analysis

  Wilson K, Duque DR, Murphy MS, Hawken S, Pham-Huy A, Kwong J, Deeks SL, Potter BK, Crowcroft NS, Bulman DE, Chakraborty P, Little J. Hum Vaccin Immunother. 2018; 14(6):1378-91. Epub 2018 Feb 8.

• Adverse events following immunization among children with epilepsy: a self-controlled case series

  Top KA, Righolt CH, Hawken S, Donelle J, Pabla G, Brna P, Deeks SL, Smith B, Wilson K, Mahmud SM. Pediatr Infect Dis J. 2020; 39(5):454-9. Epub 2020 May 1. DOI: http://doi.org/10.1097/INF.0000000000002553

• Population-level impact of Ontario’s infant rotavirus immunization program: evidence of direct and indirect effects

  Wilson SE, Rosella LC, Wang J, Le Saux N, Crowcroft NS, Harris T, Bolotin S, Deeks SL. PLoS One. 2016; 11(5):e0154340. Epub 2016 May 11.

• Impact of a publicly funded herpes zoster immunization program on the burden of disease in Ontario, Canada: a population-based study

  Martins D, McCormack D, Tadrous M, Gomes T, Kwong JC, Mamdani MM, Buchan SA, Antoniou T. Clin Infect Dis. 2020; Jan 10 [Epub ahead of print]. DOI: https://doi.org/10.1093/cid/ciaa014

• Equity and impact: Ontario’s infant rotavirus immunization program five years following implementation. A population-based cohort study

  Wilson SE, Rosella LC, Wang J, Renaud A, Le Saux N, Crowcroft NS, Desai S, Harris T, Bolotin S, Gubbay J, Deeks SL. Vaccine. 2019; 37(17):2408-14. Epub 2019 Feb 11.

• Under-reporting of pertussis in Ontario: a Canadian Immunization Research Network (CIRN) study using capture-recapture

  Crowcroft NS, Johnson C, Chen C, Li Y, Marchand-Austin A, Bolotin S, Schwartz K, Deeks SL, Jamieson F, Drews S, Russell ML, Svenson LW, Simmonds K, Mahmud SM, Kwong JC. PLoS One. 2018; 13(5):e0195984. Epub 2018 May 2.

• Using Ontario Health Insurance Plan physician billing claims to ascertain individual influenza immunization status: an updated validation study

  Schwartz KL, Jembere N, Campitelli MA, Buchan SA, Chung H, Kwong JC. CMAJ Open. 2016; 4(3):E463-70.

• The integration of barcode scanning technology into Canadian public health immunization settings

  Pereira JA, Quach S, Hamid JS, Quan SD, Diniz AJ, Van Exan R, Malawski J, Finkelstein M, Samanani S, Kwong JC; Public Health Agency of Canada/Canadian Institutes of Health Research Influenza Research Network (PCIRN) Program Delivery and Evaluation Group. Vaccine. 2014; 32(23):2748-55. Epub 2013 Nov 17.

• January 2007

  • Study demonstrates need for comprehensive influenza immunization registry in Ontario
  • ICU patients have increased risk of discontinuing medications for chronic conditions
  • Study examines differences in statin prescriptions between Ontario and BC
  • EDs that treat more heart attack patients are less likely to miss the diagnosis
  • Nurse-performed screening program for colorectal cancer can be safe and effective

• September 2015

  • South Asian men and black women and men show greatest decline in heart health over past decade in Ontario
  • Hunger in Ontario leads to poorer health, higher health costs
  • Pay-for-performance program shows modest improvement in ED wait times
  • Chickenpox immunization program has led to drop in physician and ED visits
  • Being diagnosed with diabetes late in life associated with higher risk of dementia

• March 2006

  • Increases in cardiac tests outpacing growth of heart disease
  • Immunizations not up-to-date in many Ontario two-year-olds
  • Statins may help to protect heart disease patients against sepsis
  • Ontarians with depression have equitable access to mental health services
  • Acne patients in lower income groups less likely to be referred to dermatologists

• 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

• Why collect individual-level vaccination data?

  Writing team for the Public Health Agency of Canada/Canadian Institutes of Health Research Influenza Research Network Vaccine Coverage Theme Group. CMAJ. 2010; 182(3):273-5. Epub 2010 Jan 4.

• Canada's response to pandemic H1N1 influenza: the collection of individual-level data at the point of vaccination

  Kwong JC, Foisy J, Quan S, Heidebrecht C, Kolbe F, Bettinger JA, Buckeridge DL, Chambers LW, Crowcroft NS, Dhalla IA, Sikora CA, Willison DJ, Pereira JA; Pubic Health Agency of Canada/Canadian Institutes of Health Research Influenza Research Network (PCIRN). Healthc Q. 2010;13(2):18-20.

• Pertussis vaccine effectiveness in a frequency matched population-based case-control Canadian Immunization Research Network study in Ontario, Canada 2009–2015

  Crowcroft NS, Schwartz KL, Chen C, Johnson C, Li Y, Marchand-Austin A, Bolotin S, Jamieson FB, Drews SJ, Russell ML, Svenson LW, Simmonds K, Mahmud SM, Kwong JC. Vaccine. 2019; 37(19):2617-23. Epub 2019 Apr 6. DOI: 10.1016/j.vaccine.2019.02.047.

• Office-based procedures among urban and rural family physicians in Ontario

  Jaakkimainen RL, Sood PR, Schultz SE. Can Fam Physician. 2012; 58(10):e578-87.

• Twenty years of medically-attended pediatric varicella and herpes zoster in Ontario, Canada: a population-based study

  Wormsbecker AE, Wang J, Rosella LC, Kwong JC, Seo CY, Crowcroft NS, Deeks SL. PLoS One. 2015; 10(7):e0129483.

• Guillain-Barré syndrome after influenza vaccination in adults: a population-based study

  Juurlink DN, Stukel TA, Kwong J, Kopp A, McGeer A, Upshur RE, Manuel DG, Moineddin R, Wilson K. Arch Intern Med. 2006; 166(20):2217-21.

• Using OHIP physician billing claims to ascertain individual influenza vaccination status

  Kwong JC, Manuel DG. Vaccine. 2007; 25(7):1270-4. Epub 2006 Oct 19.

• School-based influenza vaccine delivery, vaccination rates, and healthcare use in the context of a universal influenza immunization program: an ecological study

  Kwong JC, Ge H, Rosella LC, Guan J, Maaten S, Moran K, Johansen H, Guttmann A. Vaccine. 2010; 28(15):2722-9. Epub 2010 Jan 26.

• Trends in influenza vaccination in Canada, 1996/1997 to 2005

  Kwong JC, Rosella LC, Johansen H. Health Rep. 2007; 18(4):9-19.

• February 2018

  Infographics

  • 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

  ICES in the News

  • Single fathers at increased risk of premature death, perhaps due to unhealthy lifestyle
  • Childhood cancer survivors found to be at higher risk of mental illness

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  • Patterns of methadone maintenance treatment provision in Ontario: Policy success or pendulum excess?
  • Health services burden of undiagnosed and overdiagnosed COPD
  • 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
  • Association of polypharmacy with survival, complications and healthcare resource use after elective non-cardiac surgery: a population-based cohort study
  • Increasing incidence and prevalence of World Health Organization groups 1 to 4 pulmonary hypertension: a population-based cohort study in Ontario, Canada
  • Assessing covariate balance when using the generalized propensity score with quantitative or continuous exposures

• 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

  • Exploring spatial variation in registration for deceased organ donation in Ontario, Canada

  ICES in the News

  • The impact of psychiatric utilisation prior to cancer diagnosis on survival of solid organ malignancies
  • Rural-urban differences in stroke risk factors, incidence, and mortality in people with and without prior stroke: the CANHEART Stroke Study

  You may also be interested in...

  • Comparison of readmission and death among patients with cardiac disease in Northern vs Southern Ontario
  • Community-based specialist palliative care teams and health system costs at end of life: a retrospective matched cohort study
  • Equity and impact: Ontario’s infant rotavirus immunization program five years following implementation. A population-based cohort study
  • Evaluation of the fentanyl patch-for-patch program in Ontario, Canada
  • The association between insulin initiation and adverse outcomes after hospital discharge in older adults: a population-based cohort study

• Rotavirus vaccine coverage and factors associated with uptake using linked data: Ontario, Canada

  Wilson SE, Chung H, Schwartz KL, Guttmann A, Deeks SL, Kwong JC, Crowcroft NS, Wing L, Tu K. PLoS One. 2018; 13(2):e0192809. Epub 2018 Feb 14.

• Individual and regional-level determinants of Human Papillomavirus (HPV) vaccine refusal: the Ontario grade 8 HPV vaccine cohort study

  Remes O, Smith LM, Alvarado-Llano BE, Colley L, Lévesque LE. BMC Public Health. 2014; 14:1047. Epub 2014 Oct 8.

• Impact of pneumococcal vaccination on pneumonia hospitalizations and related costs in Ontario: a population-based ecological study

  Luca DL, Kwong JC, Chu A, Sander B, O’Reilly R, McGeer AJ, Bloom DE. Clin Infect Dis. 2018; 66(4):541-7. Epub 2017 Sep 26.

• A call for caution in use of pertussis vaccine effectiveness studies to estimate waning immunity: a Canadian Immunization Research Network study

  Crowcroft NS, Schwartz KL, Savage RD, Chen C, Johnson C, Li Y, Marchand-Austin A, Bolotin S, Deeks SL, Jamieson FB, Drews SJ, Russell ML, Svenson LW, Simmonds K, Righolt CH, Bell C, Mahmud SM, Kwong JC. Clin Infect Dis. 2020; May 8 [Epub ahead of print]. DOI: https://doi.org/10.1093/cid/ciaa518

• Randomized evaluation of Live ATtenuated vs. Inactivated influenza VaccinEs in Schools (RELATIVES) pilot study: a cluster randomized trial

  Kwong JC, Pereira JA, Quach S, Pellizzari R, Dusome E, Russell ML, Hamid JS, Feinberg Y, Winter AL, Gubbay JB, Sirtonski B, Moher D, Sider D, Finkelstein M, Loeb M; Public Health Agency of Canada/Canadian Institutes of Health Research Influenza Research Network (PCIRN) Program Delivery and Evaluation Group. Vaccine. 2015; 33(4):535-41. Epub 2014 Dec 6.

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