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Publication Results (237)

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  • Increased risk of cardiovascular disease in young women following gestational diabetes

    Shah BR, Retnakaran R, Booth GL. Diabetes Care. 2008; 31(8):1668-9. Epub 2008 May 16.

  • June 2018

    Remembering Jack Tu
    • 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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      • The Mental Health of Adults with Developmental Disabilities in Ontario: Lessons from Administrative Health Data
      • Maternal and infant outcomes associated with lithium use in pregnancy
      • Family physician remuneration schemes and specialist referrals: quasi‐experimental evidence from Ontario, Canada
      • Serotonergic antidepressant use and morbidity and mortality among older adults with COPD
      • Evaluating the early impacts of delisting of high strength opioid on patterns of prescribing in Ontario
      • How are physicians delivering palliative care? A population-based retrospective cohort study describing the mix of generalist and specialist palliative care models in the last year of life
      • Hepatitis C testing, status and treatment among marginalized people who use drugs in an inner city setting: an observational cohort study
    • August 2018

      • Geographic Variation in Primary Care Need, Service Use and Providers in Ontario, 2015/16
      • Food insecurity status and mortality among adults in Ontario, Canada
      • Association between statin use and cardiovascular events after carotid artery revascularization
      • Rapid repeat pregnancy among women with intellectual and developmental disabilities: a population-based cohort study
        ICES in the News
        • Contributions of prescribed and non-prescribed opioids to opioid related deaths: a population based cohort study in Ontario, Canada
        • Pregabalin and the risk for opioid-related death: a nested case-control study
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        • Characteristics of nurse practitioner practice in family health teams in Ontario, Canada
        • Medical costs of delayed hip fracture surgery
        • Patterns of mortality among adults with intellectual and developmental disabilities in Ontario 
        • Narcolepsy and adjuvanted pandemic influenza A (H1N1) 2009 vaccines – multi-country assessment
        • Unmet need for mental health services among people screened but not admitted to an early psychosis intervention program
        • A matched case-control study to assess the association between non-steroidal anti-inflammatory drug use and thrombotic microangiopathy
      • Primary Care in Ontario: ICES Atlas

        Jaakkimainen L, Upshur REG, Klein-Geltink JE, Maaten S, Schultz SE, Leong A, Wang L, editors. November 2006

      • April 2019

        • Homelessness at discharge and its impact on psychiatric readmission and physician follow-up: a population-based cohort study
        • Glucose screening in pregnancy and future risk of cardiovascular disease in women: a retrospective, population-based study
        • Differences in HbA1C at the time of diabetes diagnosis in the adult population of Ontario, Canada
        • Incidence of heart failure among immigrants to Ontario, Canada: a CANHEART immigrant study
        ICES in the News
        • Do incentive payments reward the wrong providers? A study of primary care reform in Ontario, Canada
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        • The effect of adopting pediatric protocols in adolescents and young adults with acute lymphoblastic leukemia in pediatric vs adult centers: an IMPACT Cohort study
        • Patient-reported symptoms following mastectomy alone or lumpectomy plus radiation for early stage breast cancer: a cohort study
        • Impact of delisting high-strength opioid formulations from a public drug benefit formulary on opioid utilization in Ontario, Canada
        • Days at home in the last 6 months of life: a patient-determined quality indicator for cancer care
        • Periodic health visits by primary care practice model, a population-based study using health administrative data
      • Prenatal electrocardiogram testing and postpartum depression: a population-based cohort study

        Zipursky JS, Thiruchelvam D, Redelmeier DA. Obstet Med. 2022; 15(1):31-9. Epub 2021 Jun 3. DOI:

      • Risk of development of diabetes mellitus after diagnosis of gestational diabetes

        Feig DS, Zinman B, Wang X, Hux JE. CMAJ. 2008; 179(3):229-34.

      • Infant respiratory outcomes associated with prenatal exposure to maternal 2009 A/H1N1 influenza vaccination

        Fell DB, Wilson K, Ducharme R, Hawken S, Sprague AE, Kwong JC, Smith G, Wen SW, Walker MC. PLoS One. 2016; 11(8):e0160342.

      • Neonatal opioid withdrawal and antenatal opioid prescribing

        Turner SD, Gomes T, Camacho X, Yao Z, Guttmann A, Mamdani MM, Juurlink DN, Dhalla IR. CMAJ Open. 2015; 3(1):E55-61. Epub 2015 Feb 11.

      • Effect of human papillomavirus (HPV) vaccination on clinical indicators of sexual behaviour among adolescent girls: the Ontario Grade 8 HPV Vaccine Cohort Study

        Smith LM, Kaufman JS, Strumpf EC, Lévesque LE. CMAJ. 2015; 187(2):E74-81. Epub 2014 Dec 8.

      • Ambient air pollution and incidence of early-onset paediatric type 1 diabetes: a retrospective population-based cohort study

        Elten M, Donelle J, Lima I, Burnett RT, Weichenthal S, Stieb DM, Hystad P, van Donkelaar A, Chen H, Paul LA, Crighton E, Martin RV, Decou ML, Luo W, Lavigne É. Environ Res. 2020; 184:109291. Epub 2020 Feb 22. DOI:

      • Maternal schizophrenia and adverse birth outcomes: What mediates the risk?

        Vigod SN, Fung K, Amartey A, Bartsch E, Felemban R, Saunders N, Guttmann A, Chiu M, Barker LC, Kurdyak P, Brown HK. Soc Psychiatry Psychiatr Epidemiol. 2020; 55(5):561-70. Epub 2019 Dec 6. DOI:

      • Infant and maternal outcomes for women who experience imprisonment in Ontario Canada: a retrospective cohort study

        Carter Ramirez A, Liauw J, Costescu D, Holder L, Lu H, Kouyoumdjian FG. J Obstet Gynaecol Can. 2020; 42(4):462-72.e2. Epub 2020 Jan 13. DOI:

      • Ambient air pollution and the risk of pediatric-onset inflammatory bowel disease: a population-based cohort study

        Elten M, Benchimol EI, Fell DB, Kuenzig ME, Smith G, Chen H, Kaplan GG, Lavigne E. Environ Int. 2020; 138:105676. Epub 2020 Mar 24. DOI:

      • Outcomes of pregnant women with cirrhosis and their infants in a population-based study

        Flemming JA, Mullin M, Lu J, Sarkar MA, Djerboua M, Velez MP, Brogly S, Terrault NA. Gastroenterology. 2020; 159(5):1752-62.e10. Epub 2020 Aug 8. DOI:

      • BMI and risk of gestational diabetes among women of South Asian and Chinese ethnicity: a population-based study

        Read SH, Rosella LC, Berger H, Feig DS, Fleming K, Ray JG, Shah BR, Lipscombe LL. Diabetologia. 2021; 64(4):805-13. Epub 2021 Jan 24. DOI:

      • Abortion safety and use with normally prescribed mifepristone in Canada

        Schummers L, Darling EK, Dunn S, McGrail K, Gayowsky A, Law MR, Laba T, Kaczorowski J, Norman WV. N Engl J Med. 2022; 386(1):57-67. Epub 2021 Dec 8. DOI:

      • A more accurate approach to define abortion cohorts using linked administrative data: an application to Ontario, Canada

        Schummers L, McGrail K, Darling EK, Dunn S, Gayowsky A, Kaczorowski J, Norman WV. Int J Popul Data Sci. 2022; 7(1):1700. Epub 2022 Apr 29. DOI:

      • The prognostic value of the oral glucose tolerance test for future type-2 diabetes in nulliparous pregnant women testing negative for gestational diabetes

        Hiersch L, Shah BR, Berger H, Geary M, McDonald SD, Murray-Davis B, Halperin I, Fu L, Retnakaran R, Barrett J, Melamed N; For DOH NET (Diabetes Obesity And Hypertension In Pregnancy Research Network) and SOON (Southern Ontario Obstetrical Network Investigators)TM. Diabetes Metab. 2022; Jun 2 [Epub ahead of print]. DOI:

      • Disability and interpersonal violence in the perinatal period

        Brown Hk, Saunders N, Chen S,Leslie K, Vigod S, Fung K, Guttmann A, Havercamp S, Parish SL, Ray JG, Lunsky Y. Obstet Gynecol. 2022; Oct 6 [Epub ahead of print]. DOI: 10.1097/AOG.0000000000004950

      • Association of newborn Apgar score with maternal admission to the intensive care unit

        Ray JG, Medcalf KE, Park AL. JAMA Pediatr. 2016; 170(1):88-9. Epub 2015 Nov 2.

      • Evaluating the clinical effect of female blood donors of child-bearing age on maternal and neonatal outcomes: a cohort study

        Chassé M, Tinmouth A, Goldman M, O’Brien S, Hawken S, Murphy M, Walker M, Sprague AE, Wilson K, van Walraven C, Fergusson DA. Transfus Med Rev. 2020; 34(2):117-23. Epub 2019 Dec 2. DOI:

      • Preterm birth, unplanned hospital contact, and mortality in infants born to teenage mothers in five countries: an administrative data cohort study

        Harron K, Verfuerden M, Ibiebele I, Liu C, Kopp A, Guttmann A, Ford J, van der Meulen J, Hjern A, Gilbert R. Paediatr Perinat Epidemiol. 2020; 34(6):645-54. Epub 2020 Apr 28. DOI:

      • Association of preexisting disability with severe maternal morbidity or mortality in Ontario, Canada

        Brown HK, Ray JG, Chen S, Guttmann A, Havercamp SM, Parish S, Vigod SN, Tarasoff LA, Lunsky Y. JAMA Netw Open. 2021; 4(2):e2034993. Epub 2021 Feb 8. DOI:

      • April 2017

        • Inflammatory bowel diseases on the rise in Canadian children
        • Low cancer screening rates among organ transplant patients in Ontario
        Research video
        • Baiju Shah on high thyroid cancer risk in Ontario immigrants from Southeast and East Asia
        ICES in the News
        • Two people a day die of opioid-related causes in Ontario
        • Many nursing home residents with dementia get medications of questionable benefit near the end of life
        • Where you live in Ontario could determine your risk of heart attack, stroke or dying of cardiovascular disease
        • No association between antidepressants during pregnancy and autism spectrum disorder in children
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        • Do people who experience incarceration age more quickly? Exploratory analyses using retrospective cohort data on mortality from Ontario, Canada
        • Mental health services claims and adult onset asthma in Ontario, Canada
        • Impact of a provincial quality-improvement program on primary health care in Ontario: a population-based controlled before-and-after study
        • The association of frailty with outcomes and resource use after emergency general surgery: a population-based cohort study
        • Level of need, divertibility, and outcomes of newly admitted nursing home residents
        • The Cardiovascular Health in Ambulatory Care Research Team performance indicators for the primary prevention of cardiovascular disease: a modified Delphi panel study
      • Selective screening for gestational diabetes mellitus

        Naylor CD, Sermer M, Chen EL, Farine D. N Engl J Med. 1997; 337(22):1591-6.

      • Written patient information about triple-marker screening: a randomized, controlled trial

        Glazier R, Goel V, Holzapfel S, Summers A, Pugh P, Yeung M. Obstet Gynecol. 1997; 90(5):769-74.

      • Low rates of cervical cancer screening among urban immigrants: a population-based study in Ontario, Canada

        Lofters AK, Moineddin R, Hwang SW, Glazier RH. Med Care. 2010; 48(7):611-8.

      • Maternal and offspring outcomes in women with intellectual and developmental disabilities: a population-based cohort study

        Brown HK, Cobigo V, Lunsky Y, Vigod SN. BJOG. 2017; 124(5):757-65. Epub 2016 May 25.

      • Clinical predictors for diabetes screening in the first year postpartum after gestational diabetes

        Peticca P, Shah BR, Shea A, Clark HD, Malcolm JC, Walker M, Karovitch A, Brazeau-Gravelle P, Keely EJ. Obstet Med. 2014; 7(3):116-20. Epub 2014 Apr 12.

      • Heart failure and dysrhythmias after maternal placental syndromes: HAD MPS Study

        Ray JG, Schull MJ, Kingdom JC, Vermeulen MJ. Heart. 2012; 98(15):1136-41. Epub 2012 May 16.

      • Iron poisoning in young children: association with the birth of a sibling

        Juurlink DN, Tenenbein M, Koren G, Redelmeier DA. CMAJ. 2003; 168(12):1539-42.

      • Contribution of HIV to maternal morbidity among refugee women in Canada

        Wanigaratne S, Cole DC, Bassil K, Hyman I, Moineddin R, Urquia ML. Am J Public Health. 2015; 105(12):2449-56. Epub 2015 Oct 15.

      • October 2018

        • Comparison of prescribing practices for older adults treated by female versus male physicians: a retrospective cohort study
        • Reducing repeat imaging in hepato-pancreatico-biliary surgical cancer care through shared diagnostic imaging repositories
        • Frequency and impact of prescription nonsteroidal anti-inflammatory drug use among patients with hypertension, heart failure, or chronic kidney disease
        • Access to health care and medical health services use for Canadian military families posted to Ontario: a retrospective cohort study
        ICES Research Video
        • Variation in the health outcomes associated with frailty among home care clients: relevance of caregiver distress and client sex
        ICES in the News
        • Use of the emergency department as a first point of contact for mental health care by immigrant youth in Canada: a population-based study
        • Influenza vaccine effectiveness in preventing influenza-associated hospitalizations during pregnancy: a multi-country retrospective test negative design study, 2010-2016
        • Physician characteristics associated with ordering 4 low-value screening tests in primary care
        • Emergency department volume and outcomes for patients after chest pain assessment
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        • Propensity-score matching with competing risks in survival analysis
        • Increased risk of traffic injury after a cerebrovascular event
        • Estimating the incidence of first-episode psychosis using population-based health administrative data to inform early psychosis intervention services
        • Association of cataract surgical outcomes with late surgeon career stages: a population-based cohort study
      • Maternal intellectual or developmental disability and newborn discharge to protective services

        Brown HK, Potvin LA, Lunsky Y, Vigod SN. Pediatrics. 2018; 142(6):e20181416. Epub 2018 Nov 6.

      • February 2019

        • Social licence and the general public’s attitudes toward research based on linked administrative health data, a qualitative study
        • Do doctors who order more routine medical tests diagnose more cancers? A population-based study from Ontario, Canada
        • Injection of opioids linked to increase in bacterial heart infections
        • Cause-specific mortality among HIV-infected people in Ontario, 1995–2014: a population-based retrospective cohort study
        • Association of surgical intervention for adhesive small-bowel obstruction with the risk of recurrence
        ICES in the News
        • How using your Ontario health card creates system change
        • Infertility treatment and risk of severe maternal morbidity: a propensity score-matched cohort study
        • Association of transvaginal mesh complications with the risk of new-onset depression or self-harm in women with a midurethral sling
        • Inflammatory bowel disease and new-onset psychiatric disorders in pregnancy and post-partum: a population based cohort study
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        • The risk of heart failure and other cardiovascular hospitalizations after early stage breast cancer: a matched cohort study
        • One-year survival and admission to hospital for cardiovascular events among older residents of long-term care facilities who were prescribed intensive- and moderate-dose statins
        • Healthcare utilization costs of emerging adults with mood and anxiety disorders in an early intervention treatment program compared to a matched cohort
        • Survival and health care use after feeding tube placement in children with neurologic impairment
        • Disparities in breast cancer diagnosis for immigrant women in Ontario and BC: results from the CanIMPACT study
      • Spatiotemporal variations in ambient ultrafine particles and the incidence of childhood asthma

        Lavigne E, Donelle J, Hatzopoulou M, Van Ryswyk K, van Donkelaar A, Martin RV, Chen H, Stieb DM, Gasparrini A, Crighton E, Yasseen III AS, Burnett RT, Walker M, Weichenthal S. Am J Respir Crit Care Med. 2019; 199(12):1487-95. Epub 2019 Feb 20. DOI: 10.1164/rccm.201810-1976OC.

      • August 2019

        • 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
      • May 2020

        • COVID-19 Laboratory Testing in Ontario: Patterns of Testing and Characteristics of Individuals Tested, as of April 30, 2020
        • Population-based estimates of health care utilization and expenditures by adults during the last 2 years of life in Canada’s single-payer health system
        • Association between traumatic brain injury and prison charges: a population-based cohort study
        • Five-year risk of admission to long-term care home and death for older adults given a new diagnosis of dementia: a population-based retrospective cohort study
        • Emergency department use by pregnant women in Ontario: a retrospective population-based cohort study
        ICES in the News
        • Inequity in access to transcatheter aortic valve replacement: a pan-Canadian evaluation of wait-times
        • Physician-based availability of psychotherapy in Ontario: a population-based retrospective cohort study
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        • An international cohort study of birth outcomes associated with hospitalized acute respiratory infection during pregnancy
        • Urban green space and the risks of dementia and stroke
        • Diabetes-induced eye disease among First Nations people in Ontario: a longitudinal, population-based cohort study
        • Association between immigration status and acute stroke care: a retrospective study
        • Long-term survival and costs following extracorporeal membrane oxygenation in critically ill children—a population-based cohort study
        • Use of sodium–glucose cotransporter-2 inhibitors and risk of acute kidney injury in older adults with diabetes: a population-based cohort study
        • Impact of stopping trastuzumab in early breast cancer: a population-based study in Ontario, Canada
        • Preterm birth, unplanned hospital contact, and mortality in infants born to teenage mothers in five countries: an administrative data cohort study
      • August 2020

        • 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