| Control | COPD | P-value |
---|---|---|---|
Male (%) | 63.2 | 69.9 | 0.3554 |
Age (yr) | 60.7 ± 8.9 | 65.9 ± 8.2 | < 0.0001 |
Smoking Pack Years | 38.6 ± 17.4 | 48.7 ± 22.8 | < 0.0001 |
Predicted FEV 1 (%) | 95.4 ± 11.0 | 43.0 ± 15.1 | < 0.0001 |
FEV 1 /FVC (%) | 77.8 ± 4.9 | 47.4 ± 12.1 | < 0.0001 |
N | 876 | 977 | Â |