Child gender (male) | n (%) | 2618 (51.3) | 2359 (51.2) | 2552 (51.2) | 2288 (51.3) |
Single parent family | n (%) | 538 (10.5) | 610 (13.3) | 735 (14.9) | 749 (16.8) |
Language other than English spoken at home | n (%) | 656 (12.8) | 562 (12.2) | 698 (14.0) | 658 (14.8) |
Aboriginal or Torres Strait Islander origin | n (%) | 251 (4.9) | 236 (5.1) | 196 (3.9) | 169 (3.8) |
Child age (months) | Mean (SD) | 8.9 (2.6) | 34.0 (3.0) | 57.0 (2.7) | 82.1 (3.0) |
Age of child's primary carer (y) | Mean (SD) | 31.0 (5.7) | 33.1 (5.7) | 34.6 (5.5) | 36.8 (5.6) |
Years of education, mother | Mean (SD) | 14.5 (2.6) | 14.5 (2.6) | 14.1 (2.6) | 14.2 (2.6) |
Years of education, father | Mean (SD) | 14.6 (2.4) | 14.7 (2.4) | 14.6 (2.5) | 14.6 (2.5) |