Acute and emergency services

Read our publications related to this topic.

Journal Articles

07/07/2026

Association between air temperature and COVID-19 emergency department visits in Ontario, Canada: a population-based case-crossover study

Grubic N, Ge E, Zang Z, Lavigne E, Campitelli MA, Golding H, Cisse T, Koh M, Batomen B, Liu J, Wei X. Int J Hyg Environ Health. 2026; Jul 7 [Epub ahead of print].

Journal Article

25/06/2026

Severity of chronic kidney disease and outcomes after admission to the intensive care unit

El Wadia H, Beauregard N, Silver SA, Wald R, Akbari A, Fremont D, Ramsay T, Knoll GA, Clark EG, Hundemer GL. JAMA Netw Open. 2026; 9(6): e2620192.

Journal Article

18/05/2026

Geographic variation and neighbourhood correlates of mental health-related hospitalizations and emergency department visits in children and youth during the COVID-19 pandemic: a population-based study

Antoniou T, Gozdyra P, Fridman D, Pajer K, Gomes T, Penner M, Tadrous M, Juurlink DN, Gardner W. Front Child Adolesc Psychiatry. 2026; 5:1575531.

Journal Article

12/05/2026

Risk-stratified transitional care and cardiovascular hospitalizations by sex: a secondary analysis of a randomized clinical trial

Lee DS, Wang CN, Austin PC, Straus SE, Farkouh ME, Chong A, Taljaard M, Poon S, Smith S, McKelvie RS, Iwanochko RM, MacDougall A, Elbarasi E, Cram PM, Fang J, Atzema CL, Udell JA, Rochon PA, Schull MJ, Mak S, Ross HJ. JAMA Netw Open. 2026; 9(5): e2611892.

Journal Article

11/05/2026

Health care use among patients presenting to emergency department for gout flares in Ontario, Canada: a population-based health systems analysis

Kwok TSH, Morais S, Silverstein WK, Atzema CL, Choy G, Chandratre P, Li P, Widdifield J. Arthritis Care Res (Hoboken). 2026; May 11 [Epub ahead of print].

Journal Article

22/04/2026

Socioeconomic disparities in concussion presentation

Corwin DJ, Li W, Fung SG, Yu C, Backman C, Lamoureux M, Hawken S, Johnston S, Zemek R, on behalf of the or the Transforming Research by Assessing Neuroinformatics across the Spectrum of Concussion by Embedding iNterdisciplinary Data-collection to Enable Novel Treatments (TRANSCENDENT) Research Program. JAMA Netw Open. 2026; 9(4): e267416.

Journal Article

16/04/2026

The impact of trauma center care on one-year outcomes among injured older adults: a population-based cohort study

Tillmann BW, Guttman MP, Nathens AB, Mason SA, Pequeno P, Scales DC, Ho VP, Pechlivanoglou P, Haas B. Ann Surg. 2026; Apr 16 [Epub ahead of print].

Journal Article

07/04/2026

Measuring the relationship between outpatient family physician visit regularity and acute care utilization during the end of life: a population-level retrospective cohort study

Hafid S, Jones A, Gayowsky A, Wills A, Isenberg SR, Howard M. Fam Pract. 2026; 43(3): cmag014.

Journal Article

12/03/2026

Changes over time in hallucinogen-related emergency department visits in Ontario, Canada

Myran DT, MacDonald-Spracklin R, Levesque AR, Pugliese M, Fiedorowicz JG, McDonald AJ, Rosenblat JD, Colman I, Zein J, Solmi M. Addiction. 2026; Mar 12. [Epub ahead of print].

Journal Article

09/03/2026

Transplant center treatment in emergency general surgery patients with a solid-organ transplant

Nantais J, Saskin R, Calzavara A, Kim J, Gomez D, Baxter NN. Ann Surg. 2026; Mar 9 [Epub ahead of print].

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News Releases

News Release

22/04/2026

Patients with higher markers of marginalization more likely to rely on emergency departments for concussion care, study finds

Patients experiencing higher levels of socioeconomic marginalization and without established family physicians were more likely to seek initial concussion care in hospital emergency departments (EDs) rather than outpatient settings.

News Release

27/02/2026

Newcomer children show lower rates of emergency department use for non‑urgent conditions, study finds

Refugee and immigrant children are less likely to visit the emergency department for minor illnesses compared to children born in Ontario.

News Release

21/01/2026

High‑risk patients see better results at hospitals with emergency general surgery model

Patients with high-risk diagnoses who receive treatment in an emergency general surgery (EGS)-model hospital have a lower risk of death and complications, according to a new study.

News Release

11/07/2025

Underserved youth less likely to visit emergency department for concussion in Ontario, study finds

News Release

14/05/2025

Coordinated primary, palliative, and specialty care improve outcomes for organ failure patients at end of life, studies show

News Release

14/04/2025

Research Programs and appointed ICES Scientists

ICES scientists are appointed to the ICES Research Program which best fits their interests and, as such, become members of a network of health services researchers from across Ontario.

ICES Scientists Research Programs

Acute and emergency services

Journal Articles

Association between air temperature and COVID-19 emergency department visits in Ontario, Canada: a population-based case-crossover study

Severity of chronic kidney disease and outcomes after admission to the intensive care unit

Geographic variation and neighbourhood correlates of mental health-related hospitalizations and emergency department visits in children and youth during the COVID-19 pandemic: a population-based study

Risk-stratified transitional care and cardiovascular hospitalizations by sex: a secondary analysis of a randomized clinical trial

Health care use among patients presenting to emergency department for gout flares in Ontario, Canada: a population-based health systems analysis

Socioeconomic disparities in concussion presentation

The impact of trauma center care on one-year outcomes among injured older adults: a population-based cohort study

Measuring the relationship between outpatient family physician visit regularity and acute care utilization during the end of life: a population-level retrospective cohort study

Changes over time in hallucinogen-related emergency department visits in Ontario, Canada

Transplant center treatment in emergency general surgery patients with a solid-organ transplant

News Releases

Patients with higher markers of marginalization more likely to rely on emergency departments for concussion care, study finds

Newcomer children show lower rates of emergency department use for non‑urgent conditions, study finds

High‑risk patients see better results at hospitals with emergency general surgery model

Underserved youth less likely to visit emergency department for concussion in Ontario, study finds

Coordinated primary, palliative, and specialty care improve outcomes for organ failure patients at end of life, studies show

Hospital visits for cannabis use linked to higher dementia risk, study finds

Transgender and gender diverse people less likely to receive follow-up after a mental health hospitalization

Patients who leave the emergency department without being seen face higher risk of death, hospitalization

Common antibiotics carry small but serious risks of life-threatening drug reactions, but some are safer than others

Heavy cannabis use increases risk of developing an anxiety disorder, study suggests

Research Programs and appointed ICES Scientists