• 1. Department of Epidemiology, School of Public Health, Ningxia Medical University, Yinchuan 750004, China;2. Ningxia Province Department of Health, Yinchuan 750001, China;
ZHANG Bo, Email: zhangb@nxmu.edu.cn
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Objective  To find out what risk factors are related to hypertension in China, and whether there are differences in studies from different years.
Methods  We retrieved all of the hypertension-related case-control studies which were published in CNKI and PubMed since 1990 and used meta-analysis to calculate the pooled OR and 95%CI. Then all the studies were divided into two groups according to whether they were published before 2000 or after, and results of different group were compared.
Results  Fourteen studies were included in which the relationship was assessed between hypertension and risk factors such as drinking, smoking, being overweight, and other relevant risk factors. The results of meta-analysis showed that hypertension had a relationship with being overweight, family history of hypertension, and high salt intake. The pooled OR and 95%CI were 3.26 (2.87, 3.70), 4.79 (2.81, 8.14), and 2.33 (1.55, 3.51), respectively. And the same results were obtained in subgroups analysis. The effect of smoking, irritable personality, and literacy between case group and control group showed no significant difference. Their pooled OR values (95%CI) of smoking, irritable personality, and literacy were 1.20 (0.84, 1.72), 2.73 (0.76, 9.82), and 1.22 (0.51, 2.95), respectively, and the same results were obtained in subgroups analysis. Although the effect of drinking between case group and control group showed a difference, its OR value (95%CI) was 1.61 (1.06, 2.45), and the subgroup analysis showed drinking was not related to hypertension.
Conclusion  Being overweighed, family history of hypertension, and high salt intake have relationship with hypertension, and these conclusions do not differ depending on the time of the studies conducted.

Citation: LI Junxin,ZHANG Bo. Risk Factors for Hypertension in China during Different Times: A Meta-analysis. Chinese Journal of Evidence-Based Medicine, 2009, 09(12): 1302-1309. doi: 10.7507/1672-2531.20090238 Copy

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