Analysis on body mass index,waist circumference and blood pressure among rural residents in Shandong province

Objective To investigate the relationship of body mass index(BMI),waist circumference(WC) and blood pressure among rural residents in Shandong province.Methods A multistage stratified sampling method was used.The subjects were investigated by questionnaire and the height,weight,waist circumference,hip circumference and blood pressure of the subjects were measured.All the data were analyzed by the method of descriptive epidemiology.The body mass index and waist to hip rate were calculated accordingly.Results The subjects were divided into three groups(18.5≤BMI24,24≤BMI28,BMI≥28) according to the value of BMI,the mean of blood pressure of the subjects was 123.5/76.1?mmHg,128.8/80.0?mmHg and 134.5/85.6?mmHg accordingly,and the prevalent rate of hypertension was 15.65%,26.38% and 43.78% respectively.When BMI≥24 and(or) WC≥85cm(the waist circumference of female ≥80cm),the blood pressure of the subjects increased significantly,and the prevalent rate of hypertension increased remarkably also.Conclusion The mean of blood pressure and the prevalent rate of hypertension increase with the rise of BMI and WC,so BMI and WC might be the main risk factors of hypertension.