Subject characteristics
| Emphysema (−) | Emphysema (+) | |
| Subjects n (f) | 14 (1) | 13 (0) |
| Smoking status noncurrent/current | 6/8 | 7/6 |
| Age yr | 56±3 | 58±4 |
| Pack-yrs of smoking | 28±6 | 40±3 |
| VC %pred | 118±3 | 109±3 |
| FEV1 %pred | 116±5 | 93±5* |
| FEV1/FVC % | 80±1 | 73±3* |
| DL,CO/VA %pred | 92±4 | 73±4* |
Data are presented as mean±se unless otherwise stated
f: female
VC: vital capacity
FEV1: forced expiratory volume in one second
FVC: forced vital capacity
DL,CO: carbon monoxide differing capacity of the lung
VA: alveolar volume
*: p<0.05 compared to emphysema (−)