Fig. 1.

Predictive ability of the five variables. Blue line, Child–Pugh grade; purple line, medical diseases requiring drug treatment; green line, number of segments resected; red line, adjacent organ invasion; yellow line, preoperative hospital stay. The area under the curve values for postoperative complication were 0.596, 0.579, 0.620, 0.514, and 0.611 for Child–Pugh grade, medical diseases requiring drug treatment, extent of resection, adjacent organ invasion, and preoperative hospital stay, respectively.