| Asthma | Healthy controls | p-value | |
| Subjects | 14 | 13 | |
| Female/male | 8/6 | 8/5 | ns |
| Age years | 25±2 | 29±2 | ns |
| FEV1 L | 3.87±0.2 | 3.78±0.1 | ns |
| FEV1 % pred | 98±4 | 102±3 | ns |
| FVC L | 4.83±0.2 | 4.5±0.2 | ns |
| FVC % pred | 98±3 | 101±2 | ns |
| FEV1/FVC | 0.80±0.02 | 0.84±0.01 | 0.03 |
| PC20 mg·mL−1 | 0.5±0.01 | >16 | 0.0001 |
Data are presented as n or mean±sem, unless otherwise stated. FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; PC20: provocative concentration of methacholine causing a 20% fall in FEV1; ns: not significant.