Statistical Analysis of Risk Parameters for Overall Survival and Event-Free Survival
| Parameter | Hazard ratio (95% CI) | P |
| Women vs. men | 0.512 (0.391–0.672) | <0.001 |
| 0.488 (0.376–0.633) | <0.001 | |
| M0 vs. M1 | 0.190 (0.145–0.2499) | <0.0001 |
| 0.187 (0.144–0.243) | <0.0001 | |
| ≥45 y vs. <45 y | 10.777 (6.645–17.477) | <0.0001 |
| 8.056 (5.316–12.208) | <0.0001 | |
| FTC vs. PDTC | 0.1462 (0.086–0.248) | <0.0001 |
| 0.166 (0.097–0.280) | <0.0001 | |
| FTC vs. PTC | 1.763 (1.332–2.333) | <0.0001 |
| 1.825 (1.395–2.387) | <0.0001 | |
| PDTC vs. PTC | 12.060 (7.227–20.125) | <0.0001 |
| 10.977 (6.597–18.265) | <0.0001 | |
| R0 vs. R2 | 0.316 (0.172–0.582) | <0.0002 |
| 0.2685 (0.153–0.471) | <0.0001 | |
| R1 vs. R2 | 0.420 (0.193–0.916) | 0.0292 |
| 0.386 (0.187–0.795) | 0.0098 | |
| N0 vs. N1b | 0.501 (0.359–0.698) | <0.0001 |
| 0.486 (0.353–0.668) | <0.0001 |
R0 = no residual; R1 = microscopic residual; R2 = macroscopic residual.