Table 6.

ROC curve model of patients with COVID-19

	Area	Std.error	95% CI lower	95% CI upper	Cut off
Age	0.792	0.023	0.764	0.837	64.5
Neutrophils	0.761	0.026	0.709	0.812	5.835
Lymphocytes	0.797	0.22	0.753	0.840	0.945
CRP	0.821	0.020	0.782	0.860	31.4
CD4⁺ T cells	0.848	0.018	0.814	0.883	380.5
C3	0.630	0.028	0.574	0.685	0.809
Oximetry saturation	0.808	0.25	0.759	0.856	94.5

ROC Receiver Operating Characteristic, CI Confidence interval, CRP C-reactive protein, C Complement proteins, COVID-19 Coronavirus disease 2019

Statistical significance was determined at P<0.05