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Baseline Characteristics
| Patients (N) | 240 | |
| Female (N) | 142 (59%) | |
| Age (years) | 66 ± 8 | |
| BMI (kg/m2) | 24 ± 4 | |
| Pack years | 45 ± 24 | |
| Lung function | FEV1 (%pred) | 27 ± 7 |
| RV (%pred) | 232 ± 51 | |
| TLC (%pred) | 131 ± 18 | |
| DLCO (%pred) | 30 ± 12 | |
Abbreviations: BMI, body mass index; FEV1, forced expiratory volume; RV, residual volume; TLC, total lung capacity; DLCO, diffusing capacity of the lung for carbon monoxide.
