Table 5.
Cox proportional hazards model for survival
| Variables | Hazard ratio (95% CI) | P value |
|---|---|---|
| Overall survival | ||
| Charlson comorbidity index ≤ 2 versus > 2 | 1.389 (0.751-1.808) | 0.238 |
| ASA score I-II versus III | 1.254 (0.548-1.700) | 0.120 |
| T stage T1-T2 versus T3-T4 N stage N0-N1 versus N2-N3 |
1.980 (1.287-2.950) 2.456 (1.540-3.014) |
0.026 0.013 |
| Tumor differentiation Differentiated versus Undifferentiated | 1.544 (1.187-1.989) | 0.030 |
| Disease-free survival | ||
| ASA score I-II versus III | 1.387 (0.701-1.547) | 0.175 |
| T stage T1-T2 versus T3-T4 N stage N0-N1 versus N2-N3 |
1.701 (1.400-2.510) 2.017 (1.488-3.240) |
0.030 0.010 |
| Tumor differentiation Differentiated versus Undifferentiated | 1.300 (0.874-1.687) | 0.071 |