Table 2.
Risk factors for OS according to the Cox proportional hazards regression model.
| Univariate analysis | Multivariate analysis | |||||
|---|---|---|---|---|---|---|
| HR | 95% CI | P value | HR | 95% CI | P value | |
| Age (years) | ||||||
| <50 | Reference | |||||
| 50–69 | 1.3174 | 1.1744–1.4778 | <0.001 | 1.2767 | 1.1593–1.4060 | <0.001 |
| ≧70 | 1.7925 | 1.5980–2.0108 | <0.001 | 1.7058 | 1.5491–1.8784 | <0.001 |
|
| ||||||
| Race | ||||||
| Black | Reference | |||||
| White | 1.7911 | 0.9266–1.0537 | <0.001 | 0.9952 | 0.9435–1.0497 | <0.001 |
| Others | 0.9881 | 0.7178–0.8719 | 0.7142 | 0.8000 | 0.7375–0.8677 | 0.85994 |
|
| ||||||
| Stage_T | ||||||
| T0 | Reference | |||||
| T1 | 0.9497 | 0.5843–0.9619 | 0.0235 | 0.7225 | 0.5844–0.8932 | 0.00266 |
| T2 | 1.0924 | 0.8552–1.3953 | 0.0193 | 1.0626 | 0.8627–1.3087 | 0.00323 |
| T3 | 1.2169 | 0.9528–1.5542 | 0.1158 | 1.1750 | 0.9539–1.4474 | 0.12949 |
| T4 | 1.2521 | 0.9810–1.5981 | 0.0710 | 1.2163 | 0.9880–1.4973 | 0.06487 |
| TX | 1.3546 | 1.0580–1.7344 | 0.0161 | 1.3164 | 1.0664–1.6249 | 0.01052 |
|
| ||||||
| Stage_M | ||||||
| M0 | Reference | |||||
| M1 | 2.4121 | 2.3003–2.5293 | <0.001 | 2.3545 | 2.2632–2.4495 | <0.001 |
| Stage_N | ||||||
|
| ||||||
| N0 | Reference | |||||
| N1 | 1.2549 | 1.1513–1.3678 | <0.001 | 1.2307 | 1.1448–1.3231 | <0.001 |
| N2 | 1.3563 | 1.2851–1.4314 | <0.001 | 1.3810 | 1.3199–1.4449 | <0.001 |
| N3 | 1.3033 | 1.2172–1.3954 | <0.001 | 1.3537 | 1.2779–1.4341 | <0.001 |
| NX | 1.3443 | 1.2324–1.4663 | <0.001 | 1.3919 | 1.2932–1.4981 | <0.001 |
P < 0.05, significant difference. HR, hazard ratio.