Fig. 2From: Optimal timing of cholecystectomy after percutaneous gallbladder drainage for severe cholecystitisROC curve analysis of the interval between PTGBD and cholecystectomy and the technical difficulty of cholecystectomy. The area under the curve (AUC) is 0.712. The cut-off value for the interval between PTGBD and cholecystectomy was calculated as 216 hBack to article page