Fig. 3

Kaplan–Meier curve analysis for MFS using the different risk models. There was a significant difference in MFS between the low-risk group and intermediate/high-risk group using the a three-variable Demicco risk model (P = 0.022) and b four-variable Demicco risk model (P = 0.046). There was also a significant difference in MFS between the low-risk group and intermediate/high-risk group using the modified c three-variable (P = 0.006) and d four-variable (P = 0.022) risk models in which mitotic count was replaced with the Ki-67 labeling index