| Children asymptomatic at 3.5 years with follow-up asthma data at 11.5 years | |
| Asthma at 11.5 years, % (n) | 6.0 (185/3065) |
| BHR at 8.5 years, % (n) | 13.5 (307/2270) |
| TV viewing at 3.5 years (N = 10 070), % (n) | |
| None | 2.7 (80) |
| <1 h/weekday | 28.3 (850) |
| 1–2 h/weekday | 46.4 (1394) |
| >2 h/weekday | 22.6 (678) |
| Median (IQR) BMI at 11.5 years | 18.1 (16.5–20.5) |
| Maternal smoking during pregnancy (n = 11 229), % (n) | |
| None | 85.9 (2592) |
| <10/day | 5.9 (179) |
| 10–19/day | 6.0 (182) |
| ⩾20/day | 2.2 (65) |
| Maternal asthma and allergies, % (n) | 42.8 (1279/2987) |
| Housing inadequacy in pregnancy, % (n) | 2.8 (86/3035) |
| Low educational attainment, % (n) | 8.7 (265/3048) |
| Psychopathology of mother during pregnancy, % (n) | 17.3 (521/3005) |
| Financial difficulties during pregnancy, % (n) | 6.3 (187/2972) |
| Lack of social network practical support during pregnancy, % (n) | 4.6 (139/3018) |
BHR, bronchial hyper-responsiveness; BMI, body mass index.