Variables | Unadjusted rate ratio (95Â % CI) | P value | Adjusted rate ratio (95Â % CI) | P value |
---|---|---|---|---|
 Post-treatment period (vs. pre-treatment) | 1.15 (1.08, 1.22) | <0.001 | 1.16 (1.08, 1.25) | <0.001 |
 Age at enrolment (per year) | 1.03 (1.02, 1.04) | <0.001 | 1.03 (1.02, 1.04) | <0.001 |
 Women | 1.06 (0.94, 1.20) | 0.341 | 1.17 (1.02, 1.35) | 0.022 |
Ethnicity | ||||
 White | 1.21 (1.00, 1.46) | 0.050 | 1.00 (0.81, 1.23) | 0.995 |
 Aboriginal | 1.17 (0.96, 1.44) | 0.125 | 1.14 (0.91, 1.42) | 0.264 |
 Other | Reference |  | Reference |  |
Education level | ||||
 Grade 9 or less | 0.90 (0.73, 1.12) | 0.342 | 0.89 (0.70, 1.13) | 0.353 |
 Grade 10/11 | 0.88 (0.74, 1.05) | 0.154 | 0.86 (0.70, 1.06) | 0.153 |
 Grade 12 | 0.86 (0.72, 1.03) | 0.093 | 0.80 (0.65, 0.99) | 0.035 |
 Vocational /University | Reference |  | Reference |  |
 Graduated (vs. didn’t graduate) | 1.20 (1.06, 1.35) | 0.003 | 1.14 (1.00, 1.30) | 0.055 |
Year of enrolment | ||||
 Before 2005 | Reference |  | Reference |  |
 Between 2005 and 2007 | 1.17 (1.01, 1.35) | 0.038 | 1.08 (0.94, 1.24) | 0.301 |
 After 2007 | 1.48 (1.30, 1.68) | <0.001 | 1.37 (1.19, 1.57) | <0.001 |
 Multiple admissions (vs. single) | 0.91 (0.79, 1.04) | 0.163 | 1.14 (0.97, 1.35) | 0.105 |
Mental disorder in last 5Â years | ||||
 No mental disorder | Reference |  | Reference |  |
 NSMD only | 1.41 (1.13, 1.75) | 0.002 | 1.24 (0.98, 1.57) | 0.075 |
 SUD only | 1.51 (1.26, 1.80) | <0.001 | 1.42 (1.20, 1.69) | <0.001 |
 Both NSMD & SUD | 1.80 (1.54, 2.12) | <0.001 | 1.72 (1.47, 2.01) | <0.001 |
 # of sentences in last 2 years (per sentence) | 0.97 (0.96, 0.98) | <0.001 | 0.98 (0.96, 0.99) | 0.005 |