Table 1 Demographic and clinical characteristics of the COPD participants at baseline*
|  | COPD (n = 84) |
|---|---|
Age (years) | 63.9 ± 6.3 |
Sex (male) | 76 (90.5) |
Smoking | |
 Never smoker | 9 (10.7) |
 Former smoker | 53 (63.1) |
 Current smoker | 22 (26.2) |
FEV1 (L) | 1.71 ± 0.66 |
FEV1% pred (%) | 58.4 ± 19.5 |
FVC (L) | 3.32 ± 0.92 |
FVC % pred (%) | 88.1 ± 15.9 |
FEV1/FVC (%) | 51.7 ± 12.4 |
White blood cell (109 /L) | 6.77 ± 1.42 |
Neutrophil (109 /L) | 4.12 ± 1.14 |
Eosinophil (109 /L) | 0.20 ± 0.13 |
Comorbidity | |
 Hypertension | 26 (31.0) |
 Diabetes mellitus | 8 (9.5) |
 Coronary heart disease | 12 (14.3) |
 Dyslipidemia | 12 (14.3) |