Characteristics of COPD patients at baseline
| Treated group | Control group | |
|---|---|---|
| Sex (M/F) | 11/6 | 9/8 |
| Age (years) | 58 (6) | 57 (4) |
| Smoking (packs/year) | 50 (7) | 48 (8) |
| FEV1 (% predicted) | 60.2 (9) | 59.1 (9) |
| FEV1/VC(%) | 68 (3) | 65 (6) |
| Pao2 (mm Hg) | 71.9 (5.8) | 69.7 (3.8) |
| Paco2 (mm Hg) | 39.2 (3.5) | 38.6 (5.2) |
Data are presented as mean (SE).