Fig. 2

Kaplan–Meier curves for OS comparison of patients undergoing OPD versus LPD for PDAC. a Before propensity score matching. b After propensity score matching. OS overall survival, OPD open pancreaticoduodenectomy, LPD laparoscopic pancreaticoduodenectomy, PDAC pancreatic ductal adenocarcinoma, HR hazard ratio, CI confidence interval