Baseline lung function in 90 study children
| Lung function parameters | |
| FRC mL | 228.0 (127.0–412.7) |
| FRC z-score | 0.4 (-1.8–4.8) |
| ≥2 | 14 (16) |
| V′max,FRC mL·s−1 | 208 (72–506) |
| V′max,FRC z-score | -1.1 (-3.0–1.4) |
| ≤-2 | 16 (18) |
Data are presented as median (range) or n (%). FRC: functional residual capacity; V′max,FRC: maximal expiratory flow at functional residual capacity.