Table 3.

Epidemiological factors associated with severe COVID-19 in Tianjin.

Variables	Univariate logistic regression		Multivariate logistic regression
	Crude OR (95% CI)	P-value	Adjusted OR* (95% CI)	P-value
Age ≥60 years old	1.078 (0.378, 3.071)	0.888	1.682 (0.524, 5.395)	0.382
Male	3.953 (1.346, 11.610)	0.012	3.913 (1.206, 12.696)	0.023
Wuhan-related exposure	4.260 (1.517, 11.962)	0.006	2.294 (0.670, 7.859)	0.186
Transmission from family or relatives	0.390 (0.133, 1.146)	0.087	0.419 (0.115, 1.526)	0.187
Fever	2.923 (0.358, 23.887)	0.317
Cough	1.246 (0.402, 3.862)	0.704
Fatigue	1.809 (0.435, 7.528)	0.415
Headache	0.474 (0.057, 3.968)	0.491

^*ORs were adjusted for age, gender, Wuhan-related exposure and source of transmission.