| Control | COPD |
---|---|---|
Number of subjects | 108 | 219 |
Age, year, mean (SD) | 63.6 (11.4) | 64.7 (9.7) |
Gender (% Female) | 55% | 43% |
Smoking status, (%) | Â | Â |
 Never | 30% | 5.50% |
 Current | 1.90% | 6.40% |
 Ever | 58% | 86.70% |
 Unknown | 10.10% | 1.40% |
Pulmonary function, mean (SD) | ||
 FEV1, % predicted | 95 (12.6) | 50.6 (24.0) |
 FVC, % predicted | 94.4 (13.1) | 73,8 (19.5) |
 DLCO, % predicted | 84.1 (16.7) | 56.6 (23.1) |
 Emphysema, % mean (SD) |  | 15.4 (17.1) |