Characteristics of the 36 asthmatic children
| Log PD20 μg | 1.98 (1.28–2.91) |
| FEV1 % pred | 99.1±12.6 |
| FVC % pred | 98.0±8.6 |
| MEF50 % pred | 79.7±21.7 |
Data are presented as median (interquartile range) or mean±sd. PD20: provocative dose of methacholine causing a 20% fall in forced expiratory volume in one second (FEV1); % pred: % predicted; FVC: forced vital capacity; MEF50: mean expiratory flow when 50% of the FVC remains to be exhaled. Data from 14.