Table 5.

Sensitivity, specificity, postitive predictive value, negative predictive value, and accuracy of optimal cut-off value of baseline and on day 1 neutrophil-lymphocyte ratio in predicting severe acute pancreatitis and organ failure

	Cut-off value	P value	Sensitivity	Specificity	PPV	NPV	Accuracy
SAP	NLR 0 = 4.76	0.013	68.6%	50.0%	18.6%	90.5%	52.7%
	NLR 1 = 5.18	0.002	62.9%	55.5%	18.7%	89.6%	46.9%
Organ failure	NLR 0 = 5.03	0.032	64.3%	53.1%	8.3%	95.6%	49.4%
	NLR 1 = 4.81	0.003	62.9%	55.5%	8.7%	96.0%	49.2%

P < 0.05. NLR 0, baseline neutrophil-lymphocyte ratio; NLR 1, on day 1; PPV: Positive predictive value; NPV: Negative predictive value; SAP: Severe acute pancreatitis; NLR: Neutrophil-lymphocyte ratio.