Variable screening
tumor, AJCC, Cancer
REGRESSION, TUMOR, CANCER
The significant variables in the univariate Cox regression analyses were age at diagnosis, AJCC stage, marital status, radiation status, sex, combined summary stage, tumor size, and surgery status, which were further assessed using multivariate Cox stepwise regression analysis(P<0.05). The following factors were significant after multivariate analysis, which results list in Selected variables by multivariable Cox regression analysis.AJCC, American Joint Committee on Cancer; HR, hazard ratio, CI, confidence interval.