Baseline characteristics of COPD patients included in the study
| Clinical and physiological characteristics | N=707 |
|---|---|
| Age in years: mean (SD) | 64 (9) |
| Gender (male %) | 80 |
| BMI in kg/m2: mean (SD) | 27 (5) |
| Pack-years: median (IQR) | 50 (40–74) |
| Current smoking (%) | 33 |
| Charlson Index: mean (SD) Range | 1.8 (1.2) 1–15 |
| COTE Index: mean (SD) Range COTE <4 (%); COTE ≥4 (%) | 0.6 (1.5) 0–10 75; 25 |
| FEV1%: mean (SD) | 55 (21) |
| FVC%: mean (SD) | 88 (22) |
| FEV1/FVC%: mean (SD) | 51 (14) |
| No exacerbations: mean (SD) | 1 (1.4) |
| 2007 GOLD: I, II, II, IV (%) | 14, 40, 33, 13 |
| 2011 GOLD: A, B, C, D (%) | 36, 10, 23, 31 |
| BODE quartiles: Q1, Q2, Q3, Q4 (%) | 58, 22, 11, 9 |
| Follow-up time in months: median (IQR) | 50 (23–85) |
BMI, body mass index; BODE, BMI, Obstruction, Dyspnea, Exercise; COTE, Copd cO-morbidity TEst (COTE); GOLD, Global Obstructive Lung Disease.