Fig. 4

Receiver operating characteristic (ROC) for the association of drain amylase and anastomotic leak on POD 4, POD 5, POD 6. The cutoff of 85 IU/L on POD 4 is 75.00% sensitive and 84.00% specific (AUC area = 0.82, P = 0.002). The cutoff of 65 IU/L on POD 5 is 91.67% sensitive and 80.77% specific (AUC area = 0.89, P = 0.0001). The cutoff of 55/L on POD 6 is 100% sensitive and 86.96% specific (AUC area = 0.95, P < 0.0001)