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Subject demographics
| Non-smokers | Smokers | COPD | |
|---|---|---|---|
| Subjects | 18 | 40 | 56 |
| Age | 61.2 ± 14.8 | 65.9 ± 9.4 | 65.5 ± 7.0 |
| Sex (F/M) | 7/11 | 22/18 | 30/26 |
| Smoking history | 0 | 39.6 ± 23.7 | 46.8 ± 29.6 |
| Smoking status (Current/Ex) | N/A | 18/22 | 41/15 |
| FEV1% predicted | 104 ± 43.8 | 95.1 ± 21.1 | 64.4 ± 17.9 |
| FEV1/FVC% | 0.77 ± 0.06 | 0.75 ± 0.06 | 0.60 ± 0.09 |
Data presented as mean ± SD. COPD = chronic obstructive airway disease; FEV = forced expiratory volume; FVC = forced vital capacity; N/A = not applicable.
