Table 2.

Receiver operation characteristic curve analysis of parameters for the diagnosis of critical COVID-19 patients.

Critical.

Parameters	AUC	P	95% CI	Cut-off value	Jordan index	Sensitivity	Specificity
Lymphocytes	0.865	0.0016	0.732–0.998	<1060.00	0.604	77.78%	82.61%
CD3+T	0.826	0.0047	0.657–0.995	<609.50	0.604	77.78%	82.61%
CD8+T	0.787	0.0126	0.620–0.955	<227.50	0.517	77.78%	73.91%
NK	0.913	0.0003	0.790–1.000	<66.50	0.778	77.78%	100.00%
GrB + CD8 + T	0.652	0.1867	0.427–0.878	>76.5	0.382	55.56%	82.61%
Perforin + CD8 + T	0.652	0.1867	0.420–0.884	>62.6	0.425	55.56%	86.96
GrA + NK	0.826	0.0047	0.654–0.999	<49.80	0.580	66.67%	91.30%
Perforin + NK	0.657	0.1731	0.457–0.857	<80.5%	0.314	44.44%	86.96%

AUC, area under the curve; 95% CI, 95% confidence interval.