Table 1 Patient characteristics enrolled in this study (n = 31)
Variable | Number | Percentage(%) |
|---|---|---|
Total | 31 | 100 |
Age (years) | ||
  ≤ 55 | 16 | 51.7 |
  > 55 | 15 | 48.4 |
Gender | ||
 Male | 25 | 80.6 |
 Female | 6 | 19.4 |
Smoking | ||
 Non-smoker | 8 | 25.8 |
 Smoker | 23 | 74.2 |
Histology | ||
 Adenocarcinoma | 11 | 35.5 |
 Non-adenocarcinoma | 20 | 64.5 |
Histologic grading | ||
 Poorly | 16 | 51.6 |
 Moderate and well | 15 | 48.4 |
Venous invasion | ||
 Negative | 23 | 74.2 |
 Positive | 8 | 25.8 |
Pathological stage | ||
 I/II | 17 | 54.8 |
 III | 14 | 45.2 |