Variable | Number of patients (%) | p value | |
---|---|---|---|
APE1 high | APE1 low | ||
Age(years) | Â | Â | 0.54 |
  ≥ 50 | 14 (33%) | 8 (27%) |  |
 <50 | 28 (67%) | 22 (73%) |  |
Histological subtypes | Â | Â | 0.56 |
 Squamous carcinoma | 34 (81%) | 27 (90%) |  |
 Adenocarcinoma | 6 (14%) | 2 (7%) |  |
 Adenosquamous | 2 (5%) | 1 (3%) |  |
Tumor grade | Â | Â | 0.11 |
 Poorly differentiation | 28 (67%) | 14 (48%) |  |
 Moderate differentiation | 10 (24%) | 8 (26%) |  |
 High differentiation | 4 (9%) | 8 (26%) |  |
Stage | Â | Â | 0.94 |
 Stage I | 23 (55%) | 16 (53%) |  |
 Stage II | 14 (33%) | 11 (37%) |  |
 Stage III | 5 (12%) | 3 (10%) |  |
Lymph node metastasis |  |  | < 0.01 |
 Positive | 29 (69%) | 7 (23%) |  |
 Negative | 13 (31%) | 23 (77%) |  |