Table 6.

ROC curves to evaluate blood tests and lymphocytes subsets in the prediction of severity of patients with COVID-19.

Variables	AUC	95% CI	p Value	Cut-off (per μl)
Lymphocyte counts	0.718	0.656–0.780	<0.001	1205
CD3+ T cell	0.721	0.659–0.783	<0.001	691
CD4+ T cell	0.718	0.655–0.780	<0.001	402
CD8+ T cell	0.670	0.573–0.707	<0.001	177

AUC: area under the curve; ROC: receiver operator characteristic.