Table 5 Patient’s characteristic, overall and according to the time of enrollment
Variable | Overall | Original patients group | Added patients group | P value |
|---|---|---|---|---|
no. (%) | no. (%) | no. (%) | ||
Total | 78(100%) | 31(39.7%) | 47(60.3%) | Â |
Age | Â | Â | Â | 0.246 |
  ≤ 55 | 32(41.1%) | 16(50.0%) | 16(50.0%) |  |
  > 55 | 46(58.9%) | 15(32.6%) | 31(67.4%) |  |
Gender | Â | Â | Â | 0.793 |
 Male | 64(82.1%) | 25(39.1%) | 39(60.9%) |  |
 Female | 14(17.8%) | 6(42.9%) | 8(57.1%) |  |
Smoking history | Â | Â | Â | 0.978 |
 Non-smoker | 20(25.6%) | 8(40.0%) | 12(60.0%) |  |
 Smoker | 58(74.4%) | 23(39.7%) | 35(60.3%) |  |
Histology | Â | Â | Â | 0.661 |
 Adenocarcinoma | 30(38.5%) | 11(36.7%) | 19(63.3%) |  |
 Non-adenocarcinoma | 48(61.5%) | 20(41.7%) | 28(58.3%) |  |
Histologic grading | Â | Â | Â | 0.549 |
 Poorly | 37(47.4%) | 16(43.2%) | 21(56.8%) |  |
 Moderate and well | 41(52.6%) | 15(36.6%) | 26(63.4%) |  |
Venous invasion | Â | Â | Â | 0.347 |
 Negative | 62(79.5%) | 23(37.1%) | 39(62.9%) |  |
 Positive | 16(20.5%) | 8(50.0%) | 8(50.0%) |  |
Pathological stage | Â | Â | Â | 0.744 |
 I/II | 41(52.6%) | 17(41.5%) | 24(58.5%) |  |
 III | 37(47.4%) | 14(37.8%) | 23(62.2%) |  |