Table 3.

Cox regression analysis of factors for the clearance of SARS-CoV-2.

Variables	Univariate		Multivariate
	HR (95% CI)	P-value	HR (95% CI)	P-value
Age (yr)
≤60	Reference
>60	0.464 (0.319, 0.674)	<0.001	0.543 (0.366, 0.806)	0.002
Sex
Female	Reference
Male	0.897 (0.706, 1.140)	0.376
Hypertension
No	Reference
Yes	0.595 (0.420, 0.843)	0.004	0.727 (0.504, 1.049)	0.088
Type 2 diabetes
No	Reference
Yes	0.644 (0.411, 1.008)	0.054	0.965 (0.599, 1.553)	0.882
WBC
No decreased	Reference
Decreased	1.167 (0.895, 1.521)	0.255
Lymphocyte
No decreased	Reference
Decreased	0.884 (0.683, 1.145)	0.35
Severe illness
No	Reference
Yes	0.604 (0.415, 0.881)	0.009	0.680 (0.392, 1.180)	0.171
ICU admission
No
Yes	0.607 (0.374, 0.983)	0.043	1.125 (0.584, 2.168)	0.724
Glucocorticoid
No	Reference
Yes	0.644 (0.493, 0.840)	0.001	0.698 (0.512, 0.951)	0.023

WBC, white blood cells; ICU, Intensive care unit; HR, hazard ratio; CI, confidence interval.