Sociodemographic characteristics of study population
| Characteristics | No. (%) of birthing parents with younger children, aged 0–5 yr (Cohort 1) | No. (%) of birthing parents with school-aged children, aged 6–12 yr (Cohort 2) |
|---|---|---|
| Sex | ||
| Female | 986 870 (100.0) | 1 012 997 (100.0) |
| Age band of parents, yr | ||
| < 18 | 4906 (0.5) | 13 (0) |
| 18–26 | 164 717 (16.7) | 36 243 (3.6) |
| 27–36 | 592 467 (60.0) | 368 089 (36.3) |
| 37–47 | 221 619 (22.5) | 544 602 (53.8) |
| ≥ 48 | 3161 (0.3) | 64 050 (6.3) |
| Material deprivation | ||
| 1 (least deprived) | 231 596 (23.8) | 248 140 (24.8) |
| 2 | 207 234 (21.3) | 224 054 (22.4) |
| 3 | 181 014 (18.6) | 186 712 (18.6) |
| 4 | 170 147 (17.5) | 166 238 (16.6) |
| 5 (most deprived) | 184 940 (18.9) | 176 788 (17.6) |