Baseline characteristics of study population
| Mean (SD) | Range | |
| Sex (F/M) | 66/77 | |
| Age (years) | 59.5 (6.4) | 44.6–72.9 |
| Height (cm) | 171.5 (9.8) | 149.9–195.6 |
| Weight (kg) | 81.6 (14.7) | 52.2–122.6 |
| BMI (kg/cm2) | 27.7 (3.8) | 18.7–37.5 |
| Smoking (pack years) | ||
| Current smokers (n = 38) | 41.5 (11.4) | 30–90 |
| Ex-smokers (n = 105) | 49.3 (21.0) | 30–172 |
| Lung function | ||
| FEV1 actual (l) | 3.2 (0.8) | 1.8–5.7 |
| FEV1%predicted (%) | 99.4 (12.8) | 80.2–140.7 |
| FEV1/FVC (%) | 77.9 (4.4) | 70.0–88.0 |
BMI, body mass index; FEV1, forced expiratory flow in 1 s; FEV1%predicted (%), (FEV1/predicted FEV1) × 100%; FVC, forced vital capacity; FEV1/FVC (%), (FEV1/FVC) × 100%.