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| Controls | COPD | |
|---|---|---|
| n | 11 | 10 |
| Age | 65.5 ± 7.8 | 74.2 ± 5.0 |
| Gender (M/F) | 4/7 | 5/5 |
| Packs/year | — | 47.3 ± 18.9 |
| FEV1 (% predicted) | 113.5 ± 13.5 | 56.8 ± 14.7 |
| FEV1/FVC (% predicted) | 107.8 ± 6.2 | 62.9 ± 6.3 |
FEV1, forced expiratory volume in one second; FVC, forced volume vital capacity.
