Table 1. Characteristics of all patients.
| Characteristics | Cases (n = 59) | Percentage(%) |
|---|---|---|
| Age(years) | ||
| Median | 57(27–78) | |
| Gender | ||
| Male | 38 | 64.4 |
| Female | 21 | 35.6 |
| Smoking status | ||
| Never-smoker | 29 | 48.3 |
| Smoker | 31 | 51.7 |
| Histological feature of tumor | ||
| Adenocarcinoma | 49 | 83.1 |
| Nonadenocarcinoma | 10 | 16.9 |
| Disease stage | ||
| IIIB | 5 | 8.5 |
| IV | 54 | 91.5 |
| ECOG PS | ||
| 0 | 17 | 28.8 |
| 1 | 42 | 71.2 |
| Response | ||
| PR | 31 | 52.5 |
| SD | 22 | 37.3 |
| PD | 6 | 10.2 |
Abbreviations: ECOG, Eastern Cooperative Oncology Group; PS, performance status; CR, complete response; PR, partial response; SD, stable disease; PD, progressive disease.