• Carina Iskander, Therese A Stukel, Christina Diong, Jun Guan, Natasha Saunders, Eyal Cohen, Marni Brownell, Alyson Mahar, Rayzel Shulman, Sima Gandhi, and Astrid Guttmann.
• ICES (Iskander, Stukel, Diong, Guan, Saunders, Cohen, Mahar, Shulman, Gandhi, Guttmann); Institute of Health Policy, Management and Evaluation (Stukel, Shulman), University of Toronto; Department of Paediatrics (Saunders, Cohen, Guttmann), Hospital for Sick Children, Toronto, Ont.; Department of Community Health Sciences (Brownell, Mahar), University of Manitoba; Manitoba Centre for Health Policy (Brownell), Winnipeg, Man.
• CMAJ. 2024 Jan 15; 196 (1): E1E13E1-E13.

BackgroundThe effects of the decline in health care use at the start of the COVID-19 pandemic on the health of children are unclear. We sought to estimate changes in rates of severe and potentially preventable health outcomes among children during the pandemic.MethodsWe conducted a repeated cross-sectional study of children aged 0-17 years using linked population health administrative and disease registry data from January 2017 through August 2022 in Ontario, Canada. We compared observed rates of emergency department visits and hospital admissions during the pandemic to predicted rates based on the 3 years preceding the pandemic. We evaluated outcomes among children and neonates overall, among children with chronic health conditions and among children with specific diseases sensitive to delays in care.ResultsAll acute care use for children decreased immediately at the onset of the pandemic, reaching its lowest rate in April 2020 for emergency department visits (adjusted relative rate [RR] 0.28, 95% confidence interval [CI] 0.28-0.29) and hospital admissions (adjusted RR 0.43, 95% CI 0.42-0.44). These decreases were sustained until September 2021 and May 2022, respectively. During the pandemic overall, rates of all-cause mortality, admissions for ambulatory care-sensitive conditions, newborn readmissions or emergency department visits or hospital admissions among children with chronic health conditions did not exceed predicted rates. However, after declining significantly between March and May 2020, new presentations of diabetes mellitus increased significantly during most of 2021 (peak adjusted RR 1.49, 95% CI 1.28-1.74 in July 2021) and much of 2022. Among these children, presentations for diabetic ketoacidosis were significantly higher than expected during the pandemic overall (adjusted RR 1.14, 95% CI 1.00-1.30). We observed similar time trends for new presentations of cancer, but we observed no excess presentations of severe cancer overall (adjusted RR 0.91, 95% CI 0.62-1.34).InterpretationIn the first 30 months of the pandemic, disruptions to care were associated with important delays in new diagnoses of diabetes but not with other acute presentations of select preventable conditions or with mortality. Mitigation strategies in future pandemics or other health system disruptions should include education campaigns around important symptoms in children that require medical attention.© 2024 CMA Impact Inc. or its licensors.

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