Table 1. Demographic features of all patients.
| Value | |
|---|---|
| Age, yr | |
| Mean±SD | 62.7±9 |
| Median (min–max) | 63 (40–86) |
| Smoking, pack-years | |
| Mean±SD | 44±28 |
| Median (min–max) | 40 (0–200) |
| Former smoker, n (%) | 69 (86) |
| Current smoker, n (%) | 58 (13) |
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