Nomogram and Validation
T stage
REGRESSION
Univariate and multivariate Cox regression analyses were conducted with clinicopathological indicators (including age, T stage, N stage, M stage, status of ER, PR, HER2 and menopause). Then, integrating the risk score with age and N stage, a multi-variate regression was established by a nomogram to predict the OS rates of 1-, 3- and 5-year. In addition, calibration, time-dependent ROC analysis, concordance index (C-index) and decision curve analysis (DCA) for model were completed to assess the discriminatory ability of the nomogram.