Clinical characteristics and pulmonary function data
| Former smokers | Current smokers | |||
|---|---|---|---|---|
| Emphysema (−) | Emphysema (+) | Emphysema (−) | Emphysema (+) | |
| Values are mean (SE). | ||||
| *p<0.05 v former smokers without emphysema; †p<0.05 v former smokers with emphysema; ‡p<0.05 v current smokers without emphysema. | ||||
| Number of subjects | 7 | 9 | 20 | 25 |
| Age (years) | 64 (3) | 59 (4) | 51 (2)* | 54 (2)* |
| Pack years of smoking | 20 (8) | 48 (7)* | 44 (3)* | 46 (5)* |
| VC (% pred) | 129.2 (2.1) | 105.0 (2.5)* | 110.3 (3.2)* | 105.7 (3.2)* |
| FEV1 (% pred) | 124.1 (8.9) | 87.9 (5.7)* | 101.9 (3.5)*† | 89.2 (3.3)*‡ |
| FEV1/FVC (%) | 78.9 (1.3) | 71.6 (3.0) | 80.0 (1.4)† | 71.6 (2.1)‡ |
| Tlco (% pred) | 123.1 (10.0) | 87.3 (5.1)* | 99.0 (3.1)* | 85.7 (3.3)*‡ |