Table 7.

ROC curve for various laboratory biomarkers in the severity of Delta

Test result variable	Area	SE	p value	95% confidence interval
				lower bound	upper bound
Lymphocyte	0.638	0.060	0.027	0.520	0.756
Red blood cell	0.623	0.062	0.049	0.501	0.744
D-dimer	0.779	0.044	<0.0001	0.693	0.866
Fibrinogen	0.604	0.061	0.094	0.486	0.723
Platelet	0.702	0.067	0.002	0.558	0.821
Large platelet count	0.706	0.043	0.001	0.621	0.791
PCT	0.699	0.055	0.001	0.591	0.806

SE, standard error.