fig5
Figure 5. Subgroup analysis of Kaplan-Meier survival analysis according to risk factors of the SL group and the non-SL group after PSM. (A, B) With/without cholelithiasis; (C, D) With/without preoperative symptoms; (E, F) High/low CA199 levels. SL: Staging laparoscopy; PSM: propensity score matching.