Parameter | Smokers | COPD |
---|---|---|
Data are mean (SE). | ||
FEV1 =forced expiratory volume in 1 second; FVC=forced vital capacity. | ||
*p<0.05, | ||
**p<0.01, | ||
***p<0.001 compared with equivalent value for smokers. | ||
Age (years) | 54 (3) | 68 (2)** |
Sex (M:F) | 11:4 | 12:3 |
Pack years | 29 (3) | 37 (4)* |
FEV1(l) | 2.9 (0.2) | 1.8 (0.1)*** |
FEV1(% predicted) | 93 (2) | 54 (5)*** |
FEV1:FVC ratio | 0.84 (0.02) | 0.53 (0.03)*** |