Table 2.

Univariate Cox proportional hazards regression analysis of factors affecting the risk of CVD.

Variables	All participants	(HR, 95%CI)	p value
Age
<60	2,662 (64.9)	Ref
≥ 60	1,437 (35.1)	1.289 (1.121, 1.483)	<0.001
Gender
Male	1896 (46.3)	Ref
Female	2,203 (53.7)	1.233 (1.073, 1.418)	0.003
Resident
Urban	2,277 (55.6)	Ref
Rural	1822 (44.4)	1.107 (0.961, 1.275)	0.160
Marital status
Married	3,741 (91.3)	Ref
Unmarried	358 (8.7)	1.309 (1.104, 1.552)	0.002
Education level
Primary school and below	2,728 (66.6)	Ref
Middle school	890 (21.7)	0.929 (0.781, 1.105)	0.406
High school and above	481 (11.7)	1.033 (0.835, 1.279)	0.763
Smoking
No	2,539 (61.9)	Ref
Yes	1,560 (38.1)	0.915 (0.793, 1.056)	0.223
Drinking
No	2,705 (66.0)	Ref
Yes	1,394 (34.0)	1.422 (1.220, 1.657)	<0.001
Number of chronic diseases
0	433 (10.6)	Ref
1	2031 (49.5)	1.806 (1.537, 2.122)	<0.001
2	1,061 (25.9)	3.117 (2.540, 3.826)	<0.001
≥ 3	574 (14.0)	4.742 (3.680, 6.112)	<0.001
Depression symptoms
No	1,679 (40.9)	Ref
Yes	2,420 (59.1)	1.585 (1.381, 1.819)	<0.001
BMI
Normal Weight	2061 (50.3)	Ref
Underweight	198 (4.8)	1.061 (0.730, 1.542)	0.755
Overweight	1,287 (31.4)	1.285 (1.099, 1.502)	0.002
Obese	553 (13.5)	1.650 (1.362, 1.999)	<0.001
Social activity
Low	1960 (47.8)	Ref
High	2,139 (52.2)	0.331 (0.285, 0.386)	<0.001

HR, hazards ratio; CI, confidence interval, BMI, body mass index.