Table 5. Cox regression analysis of predictors for overall survival.
| Variables | Univariate analysis |
Multivariate analysis |
|||||
|---|---|---|---|---|---|---|---|
| HR | 95% CI | P value | HR | 95% CI | P value | ||
| Sex (men/women) | 0.964 | 0.474–1.963 | 0.920 | – | – | – | |
| Age at operation | 1.331 | 0.681–2.602 | 0.403 | – | – | – | |
| Tumor volume | 1.582 | 0.850–2.946 | 0.148 | – | – | – | |
| Depth of invasion | 1.315 | 0.705–2.452 | 0.389 | – | – | – | |
| sm3/sm1 + sm2 | |||||||
| Degree of differentiation | 1.353 | 0.725–2.524 | 0.343 | – | – | – | |
| Poor/moderate | |||||||
| Lymphovascular invasion | 2.239 | 0.878–5.713 | 0.092 | – | – | – | |
| Lymph node metastases | 3.522 | 1.828–6.785 | <0.001 | 3.682 | 1.911-7.096 | <0.001 | |