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Pretreatment clinical and laboratory characteristics of patients.
| Patient characteristics | Number (percentage) |
|---|---|
| Total | 223 (100) |
| Age (year) | |
| <60 | 123 (55) |
| ≥60 | 100 (45) |
| Gender | |
| Male | 149 (67) |
| Female | 74 (33) |
| Smoking history | |
| No | 107 (48) |
| Yes | 116 (52) |
| Histological type | |
| Adenocarcinoma | 149 (67) |
| Squamous carcinoma + others | 74 (33) |
| TNM stage | |
| IIIA+IIIB | 55 (33) |
| IV | 168 (67) |
| PS score | |
| 0 | 148 (66) |
| 1 | 75 (34) |
