Table 2. Adjusted Hazard Ratios (95% CI) of Males (n = 19,992) and Females (n = 10,677) having a “Violent Offence Record” (VOR).
| Groups | Sub-Groups | Overall [n(%)] | VOR [n(%)] | Adjusted Hazard Ratio (95% CI) | p-value | ||||
|---|---|---|---|---|---|---|---|---|---|
| Males | Females | Males | Females | Males | Females | Males | Females | ||
| Traumatic Brain Injury | Not exposed | 14904 (75) | 8001 (75) | 404 (3) | 64 (0.80) | 1 | 1 | ||
| Exposed | 5018 (25) | 2676 (25) | 303 (6) | 66 (2) | 1·65 (1·42 to 1·92) | 1·73 (1·21 to 2·47) | <0·001 | 0·002 | |
| Drug and alcohol treatment record 1 | No | 19844 (99) | 10628 (99) | 702 (4) | 126 (1) | 1 | 1 | ||
| Yes | 78 (0·4) | 49 (0·46) | 5 (6) | 4 (8) | 1·79 (0·74 to 4·35) | 6·55 (2·34 to 18·30) | 0·197 | <0·001 | |
| Mental illness diagnosis 1 | No | 17611 (88) | 9056 (85) | 591 (3) | 96 (1) | 1 | 1 | ||
| Yes | 2311 (12) | 1621 (15) | 116 (5) | 34 (2) | 1·37 (1·12 to 1·68) | 1·44 (0·96 to 2·17) | 0·002 | 0·076 | |
| Indigenous status | No | 18508 (93) | 9705 (91) | 360 (2) | 46 (0·47) | 1 | 1 | ||
| Yes | 1414 (7) | 972 (9) | 347 (25) | 84 (9) | 10·25 (8·73 to 12·04) | 15·55 (10·48 to 23·07) | <0·001 | <0·001 | |
| Index of Disadvantage 2 | Lowest | 4801 (24) | 2588 (24) | 68 (1) | 11 (0·43) | 1 | 1 | ||
| Low | 4832 (24) | 2574 (24) | 133 (3) | 25 (9·97) | 1·48 (1·10 to 1·99) | 1·53 (0·75 to 3·14) | 0·009 | 0·243 | |
| High | 4921 (25) | 2626 (25) | 185 (4) | 36 (1) | 1·71 (1·29 to 2·28) | 1·79 (0·90 to 3·56) | <0·001 | 0·098 | |
| Highest | 4678 (24) | 2509 (24) | 305 (7) | 55 (2) | 1·94 (1·47 to 2·56) | 1·51 (0·76 to 3·00) | <0·001 | 0·234 | |
| Missing | 690 (4) | 380 (4) | 16 (2) | 3 (0·79) | 0·94 (0·54 to 1·63) | 1·19 (0·33 to 4·29) | 0·832 | 0·789 | |
| Year of Birth | - | - | - | - | - | 1·07 (1·02 to 1·12) | 1·00 (0·90 to 1·11) | 0·003 | 0·949 |
1 counted as “0” if occurred after the conviction
2 Highest index of disadvantage represents the lowest level of socioeconomic status (SES)