Table 3.

The parameters results of ROC cure analysis. .

	AUC (95%CI)	P value	Sensitivity (%)	Specificity (%)	Youden Index	Cut-off value
Prediction for total prognoses
ICIRI	0.704 (0.599-0.809)	<0.001	0.529	0.967	0.496	870.830
Prediction for severe progression
ICIRI	0.650 (0.519-0.782)	0.004	0.486	0.967	0.453	870.830
Prediction for critical progression
ICIRI	0.800 (0.647-0.954)	<0.001	0.733	0.906	0.639	535.441

AUC, area under the curve; ICIRI: ([c-reactive protein, mg/L*Fibrinogen, g/L*D-dimer, µg/L]/CD8⁺ T cell number, n/µL).