Table 2.

Diagnostic values of various predictors of severe acute pancreatitis.

Variable	Cut-off value	Sensitivity	Specificity	PPV	NPV
HDL-C	22.4 mg/dl	51.7	90.5	34.9	95
BUN	22.7 mg/dl	46.6	90.7	32.9	94.5
BUN (24 hrs)	21.8 mg/dl	56.9	90.2	36.3	95.5
Scr (24 hrs)	1.02 mg/dl	51.7	90.2	34.1	95
BISAP score	2	65.5	83.4	27.9	96.1
LR model	−1.86	62.7	93.2	47.4	96.1

HDL-C = High-Density Lipoprotein Cholesterol; BUN = Blood Urea Nitrogen; Scr = Serum creatinine; BISAP = Bedside Index for Severity in Acute pancreatitis; LR model = logistic regression model; PPV = positive predictive value; NPV = negative predictive value.