Drainage fluid and serum amylase levels accurately predict development of postoperative pancreatic fistula

Figure 1 Receiver operating characteristic curve analysis of amylase activity in drainage fluid. A cut-off value of 2365.5 U/L was associated with 78.6% sensitivity, 80% specificity, 66.7% PPV and 88% NPV for POPF (AUC: 0.844, P = 0.009). ROC: Receiver operating characteristic; POPF: Postoperative pancreatic fistula; NPV: Negative predictive value; PPV: Positive predictive value; AUC: Area under the curve.