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Baseline characteristics of the study population
| N (%) | |
|---|---|
| Total number of patients included | 326 (100.0) |
| Male | 206 (63.2) |
| Age, years (mean±SD) | 60.5±15.3 |
| Smoking history | |
| Current smokers | 127 (39.0) |
| Former smokers | 135 (41.4) |
| Pack years (mean±SD) | 20.6±20.9 |
| Never smokers | 64 (19.6) |
