Emergency department use in people who experience imprisonment in Ontario, Canada

Published: September 17, 2019
Category: Bibliography
Authors: Aaron M. Orkin, Fiona G. Kouyoumdjian, John Tuinema, Kinwah Fung, Stephanie Y. Cheng
Countries: Canada
Language: English
Types: Acute care intervention, Performance Analysis, Population Health, Utilization
Settings: Hospital



The aims of this study were to describe emergency department (ED) utilization by people in provincial prison and on release, and to compare with ED utilization for the general population.


We linked correctional and health administrative data for people released from provincial prison in Ontario in 2010. We matched each person by age and sex with four people in the general population. We compared ED utilization rates using generalized estimating equations, by sex and for high urgency and ambulatory care sensitive conditions.


People who experienced imprisonment (N = 48,861) had higher ED utilization rates compared with the general population (N = 195,444), with rate ratios of 3.2 (95% CI 3.0–4.4) for men and 6.5 (95% CI 5.6–7.5) for women in prison and a range of rate ratios between 3.1 and 7.7 for men and 4.2 and 8.8 for women over the 2 years after release. Most ED visits were high urgency, and between 1.0% and 5.1% of visits were for ambulatory care sensitive conditions. ED utilization rates increased on release from prison.


People experiencing imprisonment in Ontario have higher ED utilization compared with matched people in the general population, primarily for urgent issues, and particularly in women and in the week after release. Providing high-quality ED care and implementing prison- and ED-based interventions could improve health for this population and prevent the need for ED use.

Emergency Department,Utilization,Comparative Study,Provincial Prison,General Population

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