Family demographics
| Characteristic | Group of interest | Phase 1 n/N (%) | Phase 2 n/N (%) | p Value |
|---|---|---|---|---|
| Mother has partner | Yes | 112/124 (90) | 108/112 (97) | 0.06 |
| Maternal ethnicity | British | 109/119 (92) | 98/106 (93) | |
| Other white* | 2/119 (1.7) | 5/106 (4.7) | 0.18 | |
| Other† | 8/119 (6.7) | 3/106 (2.8) | (2 df) | |
| Units | Mean (N, SD) | Mean (N, SD) | p Value | |
| Maternal age | Years | 30.7 (120, 5.7) | 30.7 (111, 5.9) | 0.98 |
| Paternal age | Years | 33.2 (77, 6.4) | 32.5 (101, 6.8) | 0.46 |
| Deprivation score | IMD units | 17.6 (126, 11.7) | 16.2 (115, 12.4) | 0.36 |
Maternal ethnicity: *British, Irish and any other white; †Indian, Pakistani, Caribbean, African, any other black and other.