Table 1.
Baseline characteristics
| Patient characteristics* | |
|---|---|
| Patients, N (%) | 141 (100) |
| Gender | |
| Males, N (%) | 86 (61.0) |
| Females, N (%) | 55 (39.0) |
| Age, median (IQR) | 69 (60–74) |
| Smoking | |
| Never smoker, N (%) | 55 (39.0) |
| Past smoker, N (%) | 63 (44.7) |
| Current smoker, N (%) | 23 (16.3) |
| FEV1 (L), median (IQR) | 2.5 (2.0–2.9) |
| FEV1 (% pred.), median (IQR) | 89.0 (76.0–98.0) |
| FVC (L), median (IQR) | 3.1 (2.6–3.7) |
| FVC (% pred.), median (IQR) | 87.1 (77.8–102.0) |
| TLC (L), median (IQR) | 4.8 (4.1–5.6) |
| TLC (% pred.), median (IQR) | 77.0 (68.2–86.0) |
| DLCO (% pred.), median (IQR) | 57.0 (40.0–64.0) |
| 6MWD (m), median (IQR) | 435 (99.0–520.0) |
DLCO diffusion capacity of the lung for carbon monoxide, FEV1 forced expiratory volume in 1 s, FVC forced vital capacity, TLC total lung capacity, 6MWD 6-min walking distance
*Continuous data expressed as median with inter quartile range (IQR); categorical data as numbers (N) and percentages (%)