All | MIB | |
Study children n | 44 | 20 |
Boys | 28 (64) | 13 (65) |
Gestational age weeks | 39 (29–42) | 39 (35–42) |
Birth weight kg | 3.2 (0.9–5.2) | 3.3 (2.4–5.2) |
Age months | 15.0 (5.0–28.0) | 18.0 (9.0–28.0) |
Weight kg | 10.9 (6.2–15.6) | 11.0 (8.6–13.8) |
Skin prick test positive | 7 (16) | 4 (20) |
Atopic eczema | 18 (41) | 10 (50) |
Parental smoking | 12 (27) | 5 (25) |
Parental asthma | 14 (32) | 9 (45) |
Dominant respiratory symptom | ||
Cough | 22 (50) | 12 (60) |
Wheeze | 10 (23) | 4 (20) |
Dyspnea | 5 (11) | 2 (10) |
Other | 16 (7) | 2 (10) |
Physician-diagnosed wheeze | 25 (57) | 10 (50) |
Medication during the last 2 months | ||
Bronchodilators | 40 (91) | 18 (90) |
Corticosteroids | 4 (9) | 2 (10) |
FRC mL | 233 (125–380) | 237 (166–380) |
FRC z-score | 0.4 (−2.0–6.5) | 0.6 (−0.6–4.1) |
sGaw kPa−1·s−1 | 1.8 (0.5–5.9) | 2.3 (1.4–5.9) |
sGaw z-score | −1.7 (−5.7–8.9) | −0.5 (−2.6–8.9) |
V′maxFRC mL·s−1 | 189 (18–465) | 260 (122–465) |
V′maxFRC z-score | −1.1 (−3.7–1.4) | −0.8 (−2.0–1.4) |
Data are presented as n (%) or median (range). FRC: functional residual capacity; sGaw: specific airway conductance; V′maxFRC: maximal flow at FRC.