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Baseline characteristics of the patients
| Characteristic | Number (%) |
|---|---|
| Age (year) | |
| ≥60 | 21(56.8%) |
| <60 | 16(43.2%) |
| Gender | |
| Male | 25(67.6%) |
| Female | 12(32.4%) |
| Smoking history | |
| Smoking | 24(64.9%) |
| Nonsmoking | 13(35.1%) |
| Histology | |
| LUAD | 23(62.2%) |
| Squamous | 14(37.8%) |
| Stage | |
| IIb | 11(29.7%) |
| IIIa | 21(56.8%) |
| IIIb | 5(13.5%) |
