Table 1. Basic characteristics of NSCLC patients.
| Characteristics | No | % |
| No. of patients | 229 | |
| Age (median years) | 61 | Range, 39–75 |
| Gender | ||
| Male | 127 | 55.5 |
| Female | 102 | 44.5 |
| History of smoking | ||
| Never smoker | 130 | 56.8 |
| Smoker | 99 | 43.2 |
| Histology | ||
| Adenocarcinoma | 112 | 48.9 |
| Squamous cell carcinoma | 67 | 29.3 |
| Others | 50 | 21.8 |
| Stage | ||
| IIIB | 106 | 46.3 |
| IV | 123 | 53.7 |
| RRM1 | ||
| Negative | 146 | 63.8 |
| Positive | 83 | 36.2 |
| Chemotherapeutic regimen | ||
| Gemcitabine and carboplatin | 81 | 35.4 |
| Docetaxel and carboplatin | 77 | 33.6 |
| Vinorelbine and carboplatin | 71 | 31.0 |