Table 2.
Sociodemographic characteristics of the sample
| Characteristic | Whole cohort, N (%) | Maternal psychiatric disorder, n (%) | Paternal psychiatric disorder, n (%) |
|---|---|---|---|
| Child's gender | |||
| Female | 9404 (49.3) | 358 (49.8) | 206 (49.4) |
| Male | 9667 (50.7) | 361 (50.2) | 211 (50.6) |
| Ethnicity | |||
| Aboriginal/Torres Strait Islander | 1304 (6.8) | 157 (21.8) | 89 (21.3) |
| Other* | 17 767 (93.2) | 562 (78.2) | 328 (78.7) |
| Child speaks English as a second language | |||
| No* | 17 846 (93.6) | 671 (93.3) | 379 (90.9) |
| Yes | 1225 (6.4) | 48 (6.7) | 38 (9.1) |
| Mother's marital status at child's birth | |||
| Single/never married | 1409 (7.4) | 146 (20.3) | 70 (16.8) |
| Divorced/widowed | 223 (1.2) | 28 (3.9) | 12 (2.9) |
| Married* | 17 358 (91.0) | 532 (74.0) | 332 (79.6) |
| Missing | 81 (0.4) | 13 (1.8) | 3 (0.7) |
| Mother's age at child's birth | |||
| <20 years | 1011 (5.3) | 98 (13.6) | 56 (13.4) |
| 20–29 years | 8264 (43.3) | 388 (54.0) | 203 (48.7) |
| 30–39 years* | 9233 (48.4) | 220 (30.6) | 148 (35.5) |
| 40 years+ | 563 (3.0) | 13 (1.8) | 10 (2.4) |
| Father's age at child's birth | |||
| <20 years | 358 (1.9) | 22 (3.1) | 24 (5.8) |
| 20–29 years | 5741 (30.1) | 276 (38.4) | 184 (44.1) |
| 30–39 years* | 10 108 (53.0) | 241 (33.5) | 173 (41.5) |
| 40 years+ | 2116 (11.1) | 61 (8.5) | 36 (8.6) |
| Missing | 748 (3.9) | 119 (16.5) | – |
| Local community remoteness index | |||
| Metropolitan* | 12 317 (64.6) | 389 (54.1) | 223 (53.5) |
| Regional | 4812 (25.2) | 214 (29.8) | 126 (30.2) |
| Remote | 1942 (10.2) | 116 (16.1) | 68 (16.3) |
| Local community index for socioeconomic disadvantage | |||
| 1 (Most disadvantaged) | 2351 (12.3) | 184 (25.6) | 93 (22.3) |
| 2 | 3918 (20.5) | 179 (24.9) | 120 (28.8) |
| 3 | 3737 (19.6) | 134 (18.6) | 83 (19.9) |
| 4 | 3189 (16.7) | 90 (12.5) | 44 (10.5) |
| 5 (Least disadvantaged)* | 5874 (30.8) | 131 (18.2) | 77 (18.5) |
*
Reference group for logistic regressions.