TABLE 1.
Demographic characteristics and functional data of participants at baseline (n = 379)
| Variables | |
|---|---|
| Age in years, median (IQR) | 66 (59–72) |
| Male sex, n (%) | 297 (78.4%) |
| Pack‐years, median (IQR) | 50 (36–75) |
| Current smoker, n (%) | 136 (37.3) |
| BMI kg/m2, median (IQR) | 27 (23.7–30.1) |
| BSA (kg/m2), mean (SD) | 1.9 (0.3) |
| FEV1/FVC (%), median (IQR) | 55 (44–63) |
| FEV1 %, mean (SD) | 64.4 (21.9) |
| FVC %, mean (SD) | 93.6 (22.4) |
| TLC %, median (IQR) | 107 (96–116) |
| DLCO %, mean (SD) | 62.1 (46.8) |
| 6MWD (m), median (IQR) | 480 (403–545) |
| MMRC, median (IQR) | 1 (0–2) |
| BODE, median (IQR) | 1 (0–2) |
| Spirometric GOLD stages (%) |
I (36.2) II (47.9) III (13.3) IV (2.7) |
| Exacerbations in the previous year, median (IQR) | 0 (0–1) |
| Exacerbations in the previous year, yes (%) | 97 (37.9) |
| Charlson index, median (IQR) | 1 (0–2) |
Abbreviations: 6MWD, 6‐min walking distance; BODE, BMI, Obstruction, Dyspnoea and Exercise capacity, GOLD Global Initiative for Obstructive Lung Disease; BSA, body surface area; DLCO, diffusion capacity for carbon monoxide; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; IQR, interquartile range; mMRC, modified Medical Research Council; TLC total lung capacity.