Outcomes of robotic liver resection and intraoperative radiofrequency ablation for hepatocellular carcinoma in posterior segments VII and VIII

Figure 3 Kaplan-Meier survival curves for overall survival (blue and orange lines) and recurrence-free survival (light blue and light orange lines). A-D: In the de novo group, before and after propensity score matching. Overall survival (OS) before propensity score (PS) matching (A); RFS before PS matching (B); OS after PS matching (C); RFS after PS matching (D); E-H: In first recurrence group, before and after PS matching. OS before PS matching (E); RFS before PS matching (F); OS after PS matching (G); RFS after PS matching (H). R-LR: Robotic liver resection; RIO-RFA: Robotic intraoperative radiofrequency ablation.