Table 3.
Univariate and multivariate analysis with Cox proportional hazard model in Training cohort.
| Covariates | Univariate | multivariate | ||
|---|---|---|---|---|
| HR(95%CI) | P value | HR(95%CI) | Adjusted P value | |
| Rad-score | 2.56(1.47-4.42) | 0.001 | 2.65(1.42-4.95) | 0.008 |
| N Stage | 1.32(1.09-3.19) | 0.008 | 1.46(1.41-2.09) | 0.04 |
| Volume | 1.44(1.25-2.34) | 0.02 | 1.43(1.23-3.67) | 0.04 |
| T Stage | 1.78(0.68-2.45) | 0.32 | ||
| Size | 1.35(0.68-3.78) | 0.48 | ||
| Radiation | 0.73(0.59-1.08) | 0.57 | ||
| Age | 1.36(0.89-2.34) | 0.13 | ||
| Female | 0.82(0.51-1.34) | 0.44 | ||
| Site | 0.73(0.41-1.35) | 0.32 | ||
Multivariate analysis was applied using the Cox proportional hazards(P<0.05) model to identify independent predictors of survival that involved the univariate variables. After a series of multivariate analyses, covariates with a P value < 0.05 were used for subsequent model construction. HR, hazard ratios.