Table 3.

Prognostic value of BISAP score and serum markers for predicting SAP.

	Cut off value	SE	SP	AUC	P	PPV	NPV	LR+	LR−
BISAP	>2	61%	88%	0.77	<.0001	32%	94%	5	0.4
Creatinine	>1.1	61%	84%	0.74	<.0001	33%	94%	3.8	0.4
Creatinine48h	>1.4	60%	91%	0.79	<.0001	47%	94%	6.6	0.4
Ht	<37.1	38%	81%	0.54	.54	21%	90%	2	0.7
Ht48h	<35.2	59%	77%	0.64	.04	25%	93%	2.5	0.5
CRP48h	>217	71%	88%	0.8	<.0001	44%	91%	5.9	0.3
NLR	>9.6	65%	70%	0.68	.002	22%	83%	2.1	0.5
NLR48h	>6.15	100%	63%	0.83	<.0001	26%	100%	2.7	0
RDW	>13.6	45%	75%	0.58	.2	19%	85%	1.8	0.7
BUN	>56	53%	89%	0.73	.0002	39%	88%	4.8	0.5
BUN48h	>47	78%	80%	0.79	<.0001	34%	96%	3.9	0.2
PLR	>157	69%	53%	0.59	.15	16%	92%	1.4	0.5
PLR48h	>92.6	100%	25%	0.64	.02	15%	92%	1.3	0
Blood glucose level	>176	53%	82%	0.67	.003	28%	92%	2.9	0.5

AUC = area under the curve, BUN = blood urea nitrogen, CRP = C-reactive protein, Ht = hematocrit, LR+ = positive likelihood, LR− = negative likelihood, NLR = neutrophil-to-lymphocyte ratio, NPV = negative predictive value, PLR = platelet-to-lymphocyte ratio, PPV = positive predictive value, RDW = red cell distribution width, SE = sensibility, SP = specificity.