Table 6. ROC curve analysis for different study parameters for determining the cutoff between survivors and non-survivors.

*Statistically significant (P < 0.05)

ROC: receiver operating characteristic, AUC: area under the curve, LDH: lactate dehydrogenase, NLR: neutrophil/lymphocyte ratio, PLR: platelet/lymphocyte ratio, SII: systemic inflammatory index, ANC: absolute neutrophil count, ALC: absolute lymphocyte count, CRP: C-reactive protein

Variable	AUC	Standard error	95% confidence interval		P value	Cutoff	Sensitivity (%)	Specificity (%)
			Lower	Upper
D-dimer	0.64	0.05	0.57	0.71	<0.001*	>286	79.6	64.1
Creatinine	0.64	0.05	0.57	0.71	<0.001*	>1.3	56.2	74.2
LDH	0.69	0.05	0.62	0.75	<0.001*	>730	66.5	86.0
Ferritin	0.65	0.05	0.58	0.72	<0.001*	>431	64.4	80.1
CRP	0.71	0.06	0.64	0.77	<0.001*	>30.8	80.2	60.8
ANC	0.72	0.02	0.67	0.76	<0.001*	>6000	60.9	74.4
ALC	0.77	0.02	0.73	0.81	<0.001*	<900	78.1	67.8
NLR	0.82	0.02	0.78	0.85	<0.001*	>6.71	74.0	78.3
PLR	0.72	0.03	0.67	0.76	<0.001*	>312	56.8	82.2
Platelet	0.60	0.03	0.55	0.64	<0.001*	≤2.3	68.2	48.3
SII	0.76	0.02	0.72	0.80	<0.001*	>12.80	72.4	69.6