| OBJECTIVE This study examined the prevalence and aggregation of cardiovascular risk factors in rural Luo Ping county of Yunnan province based on a cross-sectional health examination survey conducted in 2010. Research the relationship between cardiovascular risk factors prevalence and group, individual socioeconomic factors by multi-level modeling study in rural Luo Ping county of Yunnan province. The results could serve as a basis to provide evidence for the local government to prevent and control cardiovascular diseases.METHODS (1) Luo Ping county was selected as the study community. It consisted of 12 townships. Three or two villages were chosen based on the probability proportional to size (PPS) from each township. In each selected village, we obtained a name list of individuals aged≥18 years from the village committee, and simple random sampling was used to select 200 individuals from each village. On site questionnaire includes:general information such as gender, age, occupation, ethnicity, smoking, drinking and diet, etc. (2) The medical examinations, including height, weight and waist, waist circumference, blood pressure and fasting plasma glucose. Epidata3.1 software was used to build a database and all of the survey results were entered after rigorous review. SPSS 17.0 software was used for Statistical analysis.RESULTS 4801 participants consented to participate in the survey, with a response rate of 98.2%.including2152 male(44.8%) and 2649 female(55.2%).The prevalence of smoking, alcohol, overweight, obesity, diabetes, central obesity, blood-lipid, high salt diet, and family history were31.1%,21.9%,25.1%,7.0%,6.8%,43.8%,0.6%,15.9% and 6.1%. Respectively, The prevalence of smoking and alcohol of men were significantly higher than that of women (68.7%and 0.5%, P<0.05; 43.2% and 2.8%, P<0.05). The prevalence of obesity, hypertension, diabetes and central obesity of men were significantly lower than that of women. The prevalence of overweight, family medical history and high salt diet was not statistically significant in different sex. The prevalence of central obesity, diabetes and hypertension of cardiovascular risk factors in men and women increases with age increased (trend inspection; P<0.05). Cardiovascular risk factors of different cultural degree:the prevalence of smoking (P <0.01), drinking alcohol (P<0.01), high blood fat (P<0.01), family history (P< 0.01) and central obesity (P<0.01) increases with cultural degree increased; the prevalence of hypertension and diabetes decreases with cultural degree increased; high salt, overweight and obesity were not statistically significant (P>0.05).80.5% of the crowd has one or more cardiovascular disease risk factors, and the rate of clustering with more than 1 risk factor in the male is 89.6%, significantly (p< 0.05) higher than that of women(73.2%). The rate of clustering with more than 1 risk factor rises along with increase of age(trend inspection:P<0.01). Multilevel linear regression analysis shows that the clustering level of cardiovascular disease risk factors is higher, especially, women'clustering leve is significantly higher than that of men, and rural villagers in the township that has higher average income have lower the clustering level of cardiovascular disease risk factors.CONCLUSION In Luo Ping county of Yunnan province the rural residents' clustering level of cardiovascular disease risk factors is higher, socioeconomic factors, between individual and township, all affect clustering of cardiovascular disease risk factors. Strengthen comprehensive interference with cardiovascular disease risk factor for local villagers to reduce cardiovascular health hazards to the villagers.
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