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Table 2 Unadjusted and adjusted rate ratio of primary care utilization for persons released from provincial prison in 2010 and age- and sex-matched general population controls in Ontario, Canada, 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 prisona

Unadjusted rate ratio (95% CI)

Rate ratio adjusted for neighbourhood income quintile and rurality (95% CI)

Rate ratio adjusted for neighbourhood income quintile, rurality, and ADGsb (95% CI)

In prison

6.1 (5.9, 6.2)

6.1 (5.9, 6.2)

3.9 (3.8, 4.0)

Post-release

0-6 days

3.7 (3.6, 3.8)

3.8 (3.7, 3.9)

2.7 (2.6, 2.8)

7-29 days

2.6 (2.6, 2.7)

2.7 (2.6, 2.8)

1.9 (1.9, 2.0)

30-89 days

2.4 (2.4, 2.5)

2.5 (2.4, 2.6)

1.8 (1.7, 1.9)

90-179 days

2.4 (2.3, 2.5)

2.5 (2.4, 2.6)

1.8 (1.7, 1.9)

180-364 days

2.4 (2.4, 2.5)

2.5 (2.4, 2.5)

1.8 (1.8, 1.9)

365-730 days

2.5 (2.4, 2.6)

2.5 (2.4, 2.6)

1.9 (1.8, 2.0)

  1. aOr the corresponding period for general population controls. bADGs Aggregated Diagnosis Groups