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Demographics of study participants
| Never Smoker (N = 65) | Smokers (N = 45) | ||
|---|---|---|---|
| Control (N = 23) | COPD (N = 22) | ||
| Age | 28 ± 8 | 53 ± 5 | 64 ± 9 |
| Sex (m/f) | 36/29 | 18/5 | 14/8 |
| Current Smokers | 0% | 78% | 41% |
| Pack Years | 0 | 36 ± 14 | 60 ± 29 |
| FEV1 post bronchodilator (l) | 4.2 ± 0.9 | 3.2 ± 0.7 | 1.7 ± 0.7 |
| FEV1 (% predicted) | 103% ± 11% | 95% ± 13% | 56% ± 21% |
| FEV1/FVC | 0.85 ± 0.06 | 0.79 ± 0.05 | 0.53 ± 0.12 |
Shown are means ± standard deviations; P values in text
