Table 1.
Detailed studied group characteristics
| Gender | |
| Male, n (%) | 100 (69) |
| Female, n (%) | 45 (31) |
| Age | |
| Median age ± SD (years) | 60 ± 8.8 |
| ≥60 years, n (%) | 72 (49.7) |
| <60 years, n (%) | 73 (50.3) |
| Histopathology | |
| Adenocarcinoma, n (%) | 80 (55.2) |
| Squamous cell carcinoma, n (%) | 29 (20) |
| Large-cell carcinoma, n (%) | 22 (15.1) |
| NSCLC-NOS, n (%) | 14 (9.7) |
| Smoking status | |
| Current smokers, n (%) | 73 (50.4) |
| Former smokers, n (%) | 21 (14.5) |
| Non-smokers, n (%) | 36 (24.8) |
| Lack of data, n (%) | 15 (10.3) |
| Performance status (ECOG/WHO) | |
| 0, n (%) | 22 (15.2) |
| 1, n (%) | 76 (52.4) |
| 2, n (%) | 31 (21.4) |
| 3, n (%) | 16 (11) |