Table 1. Baseline characteristics.
| Characteristic | Value (n=140) |
|---|---|
| Male:Female | 43 (30.7):97 (69.3) |
| Age, yr | 45.5±14.5 |
| Heights, cm | 162.3±8.9 |
| Body weight, kg | 63.0±11.6 |
| Age group, yr | |
| 20–29 | 23 (16.4) |
| 30–39 | 27 (19.3) |
| 40–49 | 28 (20.0) |
| 50–59 | 37 (26.4) |
| 60–69 | 19 (13.6) |
| 70–79 | 6 (4.3) |
| FVC, L | 3.7±0.8 |
| FVC, % predicted | 97.0±12.5 |
| FEV1, L | 3.0±0.7 |
| FEV1, % predicted | 97.0±11.5 |
| Hb, g/dL | 14.1±1.6 |
| DLco, mL/mm Hg/min | 21.0±5.8 |
| VA, L | 4.6±1.0 |
Values are presented as number (%) or mean±SD. FVC: forced vital capacity; FEV1: forced expiratory volume in 1 second; Hb: hemoglobin; DLco: diffusing capacity of lung for carbon monoxide; VA: alveolar volume.