Group of children | With asthma | Total number | OR (95% CI) |
Respiratory diagnosis | |||
Mechanical ventilation or CPAP | 2762 | 29827 | 1.33 (1.26–1.39) |
No mechanical ventilation or CPAP | 2276 | 25921 | 1.32 (1.26–1.39) |
CPAP | 419 | 3508 | 1.22 (1.07–1.39) |
Mechanical ventilation | 126 | 710 | 1.85 (1.44–2.31) |
Bronchopulmonary dysplasia | 39 | 176 | 1.97 (1.12–3.47) |
Data are presented as n, unless otherwise stated. Data are shown after adjustment for year of birth, maternal age, parity, smoking in early pregnancy, maternal body mass index and gestational duration (groups as in tables 1] and 3]). Children with asthma (five or more prescriptions) n = 43,387, total children n = 765,792. CPAP: continuous positive airway pressure.