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Table 3 Proportion of persons released from provincial prison in 2010 and age- and sex-matched general population controls in Ontario, Canada with any primary care utilization, by period relative to time in prisona

From: Primary care utilization in people who experience imprisonment in Ontario, Canada: a retrospective cohort study

Period relative to time in prison* Prison release group General population controls p value‡
N Any use (%) N Any use (%)
In prisonb 48,861 40.8% 195,444 14.0% <0.001
0-6 days post-release 48,861 13.4% 195,444 4.4% <0.001
7-29 days post-release 47,870 19.5% 195,393 12.0% <0.001
30-89 days post-release 44,939 28.5% 195,231 24.2% <0.001
90-179 days post-release 39,328 33.3% 194,794 31.7% <0.001
180-364 days post-release 33,538 43.9% 194,158 47.3% <0.001
365-730 days post-release 26,055 58.3% 193,040 61.8% <0.001
  1. aOr the corresponding period for general population controls. Note that the period lengths vary, which limits the ability to compare the percent with any use between time periods. bThe median length of time in prison was 10 days (interquartile range 3 to 52 days). ‡From chi squared test of the proportion with any use in the prison release group compared to general population controls