Table 2. Area under ROC curve and optimum cutoff.

Variables	Assessment of validity
	AUC	Optimum cutoff	Sensitivity	Specificity	Predictive value			Likelihood ratio
					Positive	Negative		Positive	Negative
NLR	0.716	3.82	50.4%	84.04%	56.3%	80.6%		3.16	0.59
LDH(U/L)	0.740	246	59.2%	79.15%	53.6%	82.7%		2.84	0.52
D-dimer(μg/ml)	0.650	0.83	37.6%	84.04%	49%	76.8%		2.36	0.74
CT-score	0.612	7	36.8%	79.8%	42.6%	75.6%		1.82	0.79

Abbreviation: ROC, receiver operator characteristic curve; NLR, neutrophil-to-lymphocyte ratio; LDH, lactate dehydrogenase.