Fig. 2

∆Alb cutoff and its discriminative performance. A Receiver operating characteristic (ROC) curves of preoperative albumin (gray), ∆Alb (green), and of the algorithm (orange) for overall complications of ∆Alb (blue). Calculated area under the curve (AUC) of preoperative albumin, ∆Alb, and of the model were 0.63 (p<0.01), 0.75 (p<0.01), and 0.84 (p<0.01), respectively. B Postoperative complications: bars indicating the number of patients with of minor-, major-, and overall complications. C Boxplots for comparison of Comprehensive Complication Index (CCI). D Boxplots for comparison of length of stay (LoS)