Efficacy of arbidol in COVID-19 patients: A retrospective study

Table 3 Indicators in receiver operating characteristic curve

Test variable	AUC	95%CI		Cut-off	P value	Sensitivity	Specificity	Youden's index
		Lower range	Upper range
LC	0.424	0.294	0.555	1.735	0.227
CRP	0.517	0.384	0.649	66.95	0.792
ESR	0.416	0.292	0.540	77.65	0.180
Ferritin	0.708	0.599	0.816	486.5	0.001	80%	56.5%	0.365
IL6	0.597	0.476	0.718	5.935	0.123
LDH	0.707	0.595	0.820	239.5	0.001	75%	67.4%	0.424
Serum amyloid A	0.533	0.409	0.658	45.10	0.594

AUC: Area under curve; CRP: C-reactive protein; ESR: Erythrocyte sedimentation rate; IL-6: Interleukin-6; LDH: Lactate dehydrogenase.