Subject characteristics
| Asthma | Allergic rhinitis | Healthy | |
| Subjects n | 14 | 28 | 10 |
| Age yrs | 34.3±3.2 | 30.9±1.8 | 37.2±3.9 |
| Male/Female | 5/9 | 17/11 | 3/7 |
| Duration of symptoms yrs | 12.6±2.9 | 7.6±1.1 | – |
| Perennial/seasonal | 9/5 | 16/12 | – |
| FEV1 % pred | 104.9±3.2 | 107.4±1.5 | 111.8±1.2 |
| FEV1/FVC % | 79.8±1.6 | 85.3±1.0 | 87.1±1.2 |
Data are presented as mean±sem. FEV1: forced expiratory volume in one second; FVC: forced vital capacity.