Nomogram and Validation
REGRESSION
The potential prognostic clinicopathological factors (age, stage of T, N, M, status of ER, PR, HER2, menopause, and radiotherapy) were analyzed by univariate and multivariate Cox regression in training set (Table 
Univariate and multivariate Cox analysis of OS in training setOS, overall survival; ER, estrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2; HR, hazard ratio; 95% CI, 95% confidence interval
Nomogram and verification of prognostic modelUnivariate and multivariate Cox analyses of clinical factors and risk score with OS in training set 