Fig. 2

Kaplan–Meier curves analysis comparing type B and type C before and after matching. OS overall survival, RFS recurrence-free survival. A, B unadjusted: 5-year OS (type B vs. type C); 5-year RFS (type B vs. type C); C, D adjusted: 5-year OS (type B vs. type C); 5-year RFS (type B vs. type C)