• Tetyana Kendzerska, David T Zhu, Michael Pugliese, Douglas Manuel, Mohsen Sadatsafavi, Marcus Povitz, Therese A Stukel, Teresa To, Shawn D Aaron, Sunita Mulpuru, Melanie Chin, Claire E Kendall, Kednapa Thavorn, Rebecca Robillard, and Andrea S Gershon.
• The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.
• J Hosp Med. 2022 Sep 1; 17 (9): 726737726-737.

BackgroundThe impact of the COVID-19 pandemic on the management of ambulatory care sensitive conditions (ACSCs) remains unknown.ObjectivesTo compare observed and expected (projected based on previous years) trends in all-cause mortality and healthcare use for ACSCs in the first year of the pandemic (March 2020 to March 2021).Design, Setting And ParticipantsWe conducted a population-based study using provincial health administrative data on general adul population (Ontario, Canada).Outcomes And MeasuresMonthly all-cause mortality, and hospitalizations, emergency department (ED) and outpatient visit rates (per 100,000 people at-risk) for seven combined ACSCs (asthma, chronic obstructive pulmonary disease, angina, congestive heart failure, hypertension, diabetes, and epilepsy) during the first year were compared with similar periods in previous years (2016-2019) by fitting monthly time series autoregressive integrated moving-average models.ResultsCompared to previous years, all-cause mortality rates increased at the beginning of the pandemic (observed rate in March to May 2020 of 79.98 vs. projected of 71.24 [66.35-76.50]) and then returned to expected in June 2020-except among immigrants and people with mental health conditions where they remained elevated. Hospitalization and ED visit rates for ACSCs remained lower than projected throughout the first year: observed hospitalization rate of 37.29 versus projected of 52.07 (47.84-56.68); observed ED visit rate of 92.55 versus projected of 134.72 (124.89-145.33). ACSC outpatient visit rates decreased initially (observed rate of 4299.57 vs. projected of 5060.23 [4712.64-5433.46]) and then returned to expected in June 2020.© 2022 Society of Hospital Medicine.

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