Characteristics of enrolled participant children and children included in the analysis
| Enrolled study sample (n=1456) | Analytical study sample (n=1240) | |
|---|---|---|
| Sex, n (%) | ||
| Male | 745 (51.2) | 626 (50.5) |
| Female | 711 (48.8) | 614 (49.5) |
| Maternal smoking during pregnancy, n (%) | ||
| No | 1078 (74.8) | 959 (77.5) |
| Yes | 364 (25.2) | 278 (22.5) |
| Missing, n | 14 | 3 |
| Maternal early pregnancy BMI (kg/m2), n (%) | ||
| <25.0 | 760 (64.7) | 637 (66.0) |
| ≥25.0 | 415 (35.3) | 328 (34.0) |
| Missing, n | 281 | 275 |
| Asthma at age 18 years, n (%) | ||
| No | 1074 (82.3) | 937 (82.1) |
| Yes | 231 (17.7) | 204 (17.9) |
| Missing, n | 151 | 99 |
| FEV1/FVC % at age 18 years, Mean (SD) | 87.3 (7.2) | 87.3 (7.2) |
| Missing, n | 617 | 416 |
| Systolic blood pressure at age 18 years, Mean (SD) | 108.6 (11.9) | 108.5 (11.9) |
| Missing, n | 608 | 409 |
| Diastolic blood pressure at age 18 years, Mean (SD) | 64.7 (9.1) | 64.7 (9.1) |
| Missing, n | 608 | 409 |
BMI, Body Mass Index; FEV1, forced expiratory volume in one second; FVC, forced vital capacity; n, number.