Characteristics of patients (n=240)1-150
| Men (%) | 40.4 |
|---|---|
| Age (years) | 44.9 (15.9) |
| Median (range) pack years | 2.1 (0–65.0) |
| FEV1 (% predicted) | 91.3 (17.9) |
| PEF (l/min) | 394.8 (122.9) |
| PEF (% pred) | 84.8 (19.0) |
| FEV1/FVC (%) | 78.8 (8.9) |
| ΔFEV1 (% predicted) | 3.7 (4.7) |
| ΔFEV1 ⩾9% predicted (n, %) | 32, 13.3 |
| ΔFEV1 ⩾200 ml absolute (n, %) | 63, 26.3 |
| ΔFEV1 ⩾12% predicted and 200 ml (n, %) | 11, 4.6 |
| ΔFEV1 ⩾15% baseline and 200 ml (n, %) | 15, 6.3 |
| FEV1 <FEV1pred − 1.64RSD (n, %) | 48, 20 |
| PEF <PEF pred − 1.64RSD (n, %) | 86, 35.8 |
↵1-150 All values are expressed as mean (SD) unless stated otherwise.
FEV1 = forced expiratory volume in one second; PEF = peak expiratory flow; FVC = forced vital capacity; RSD: residual standard deviation.