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[Epidemiologic characteristics of major risk factors of coronary heart disease in residents from Beijing communities in different age groups].

OBJECTIVE
To study the difference in prevalence of major risk factors of coronary heart disease (CHD) in resident from Beijing communities in different age groups so as to offer suggestions for prevention of CHD in Beijing.


METHODS
The samples were selected by random cluster multistage method. Serum lipid level and CHD factors were determined through questionnaire, physical examination and biochemical detection for 10 054 subjects in Beijing communities during June 2007 to August 2007. According to age, the subjects were divided into 3 groups: 20 - 44 yr group, 45 - 59 yr group and > or = 60 yr group.


RESULTS
After age and sex standardization the prevalence of hypercholesterolemia, hypertension, diabetes, smoking and obesity was 9.30%, 41.57%, 10.18%, 35.81% and 22.89% respectively. The prevalence of hypercholesterolemia, hypertension and diabetes showed an rising trend with advancing age (trend chi(2): 15.6, 31.7 and 18.0, all P < 0.001). The group of 45 - 59 yr had the highest prevalence in smoking and obesity 28% and 25.27% respectively. Over 30% in the groups of 45 - 59 yr and > or = 60 yr were in the borderline of hypercholesterolemia and hypertension and over 40% were overweight. After age and sex standardization, 67.15% of community residents had at least 1 CHD risk factor, 21.37% and 8.50% 2 or over 3 CHD risk factors. As compared with group 20 - 44 yr, the odds ratio (95%CI) for clustering of CHD risk factors in groups 45 - 59 yr and > or = 60 yr were 2.63 (95%CI 2.371 - 2.924) and 4.3 (95%CI 3.764 - 4.913) respectively. The odds ratio (95%CI) for clustering of CHD risk factors for male vs female was 4.392 (95%CI 3.938 - 4.899).


CONCLUSION
The prevalence of CHD major risk factors of Beijing community residents is high. Groups of 45 - 59 yr and > or = 60 yr have a higher prevalence and clustering of CHD major risk factors than 20 - 44 yr group. So these age groups deserve a higher priority of comprehensive prevention and control strategies of CHD.