Variables | N | t or F value | P value |
---|---|---|---|
Age (year) | Â | 1.954 | 0.0540 |
 ≥ 60 | 53 |  |  |
 < 6 | 14 |  |  |
Gender | Â | 1.089 | 0.2800 |
 Male | 49 |  |  |
 Female | 18 |  |  |
Tumor size (cm) | Â | 1.623 | 0.1095 |
 ≥ 5 cm | 32 |  |  |
 < 5 cm | 35 |  |  |
Histological classification | Â | 2.88 | 0.0303 |
 Well-Moderately differentiated | 20 |  |  |
 Moderately–Poorly differentiate | 21 |  |  |
 Poorly differentiate | 26 |  |  |
Lymph-node metastasis | Â | 0.4838 | 0.6301 |
 Yes | 43 |  |  |
 No | 24 |  |  |
TNM Stage | Â | 0.3633 | 0.7176 |
 I+II | 24 |  |  |
 III+IV | 43 |  |  |
Vascular invasion | Â | 1.338 | 0.1855 |
 Yes | 26 |  |  |
 No | 41 |  |  |