Table 4. Binary logistic regression analysis of risk factors of severe COVID-19.

Characteristics and findings	OR (95%CI)	p value
Age (≥ 75 years vs. < 75)	5.608 (1.160–27.109)	0.032
Sex (female vs. male)	0.449 (0.114–1.774)	0.254
Hypertension (Yes vs. No)	3.436 (1.058–11.162)	0.040
Diabetes (Yes vs. No)	6.936 (1.646–29.220)	0.008
Cardiovascular disease (Yes vs. No)	2.509 (0.454–13.851)	0.291
Lymphocyte count (×109 /L)	0.267 (0.091–0.782)	0.016
Serum creatinine (U/L)	1.019 (0.982–1.056)	0323
Total bilirubin (μmol/L)	0.993 (0.919–1.073)	0.863