Fig. 2From: Comparison of the efficacy and safety between palliative biliary stent placement and duct clearance among elderly patients with choledocholithiasis: a propensity score-matched analysis Duration of cholangitis-free periods. KaplanāMeier graph showing the duration of cholangitis-free periods. The duration of EBS was significantly shorter than that of complete stone removal (pā<ā0.01, log-rank test; EBS, endoscopic biliary stenting; NA, not applicable)Back to article page