Demographics of case and control participants for the two study groups
| Child maltreatment allegation | Substantiated maltreatment | |||
| Cases | Controls | Cases | Controls | |
| N=13 648 (%) | N=54 592 (%) | N=6486 (%) | N=25 944 (%) | |
| Sex | ||||
| Women | 7001 (51.3) | 26 389 (48.3) | 3378 (52.1) | 12 582 (48.5) |
| Men | 6647 (48.7) | 28 203 (51.7) | 3108 (47.9) | 13 362 (51.5) |
| Aboriginality | ||||
| Non-Aboriginal | 10 858 (79.5) | 52 048 (95.3) | 4882 (75.3) | 24 657 (95.0) |
| Aboriginal | 2790 (20.4) | 2544 (4.7) | 1604 (24.7) | 1287 (5.0) |
| Socioeconomic disadvantage | ||||
| 1 – Low disadvantage | 258 (1.9) | 4383 (8.0) | 91 (1.4) | 1982 (7.6) |
| 2 | 720 (5.3) | 7119 (13.0) | 298 (4.9) | 3356 (12.9) |
| 3 | 1769 (13.0) | 12 508 (22.9) | 777 (12.0) | 5953 (22.9) |
| 4 | 3137 (23.0) | 12 940 (23.7) | 1380 (21.3) | 6167 (23.8) |
| 5 | 2935 (21.5) | 7940 (14.5) | 1450 (22.3) | 3828 (14.7) |
| 6 – High disadvantage | 3511 (25.7) | 4890 (8.9) | 1791 (27.6) | 2393 (9.2) |
| Allegation year | ||||
| 1990–1993 | 1815 (13.3) | 611 (9.4) | ||
| 1994–1998 | 3144 (23.0) | 1271 (19.6) | ||
| 1998–2001 | 3692 (27.1) | 2041 (31.5) | ||
| 2002–2005 | 4997 (36.6) | 2561 (39.5) | ||
| Maternal marital status | ||||
| Married/Defacto | 9065 (66.4%) | 49 321 (90.3%) | 4118 (63.4%) | 23 364 (90.1%) |
| Single | 4525 (33.1%) | 5220 (9.6%) | 2324 (35.8%) | 2553 (9.8%) |
| Maternal age | ||||
| <20 years | 2302 (16.9%) | 2347 (4.3%) | 1130 (17.4%) | 1143 (4.4) |
| 20–29 years | 8014 (58.7%) | 27 246 (49.9%) | 382 (58.9%) | 12 809 (49.4%) |
| 30–39 years | 3053 (22.4%) | 23 732 (43.5%) | 1451 (22.4%) | 11 399 (43.9%) |
| >39 years | 199 (1.5%) | 1267 (2.3%) | 84 (1.3%) | 593 (2.3%) |