Characteristics of the study population of 1,107 children
| Characteristics | |
| Mean age yrs | 10 (8–13) |
| Females | 534 (48) |
| Current wheeze | 194 (18) |
| Ever-asthma# | 91 (8) |
| Inhaled corticosteroid treatment | 42 (4) |
| Mean FEV1 | 100 (75–168) |
| AHR | 225 (20) |
| Geometric mean DRS | 0.70 (−0.80–14.30) |
| Median blood eosinophils ×106·L−1¶ | 210 (1–2190) |
| Median serum ECP+ | 5.9 (2.0–201.0) |
Data are presented as mean (range), n (%) and median (range). FEV1: forced expiratory volume in one second; AHR: airway hyperresponsiveness; DRS: dose-response slope; ECP: eosinophil cationic protein. #: n = 1,095; ¶: n = 682; +: n = 485.