Association of Body Mass Index,Waist Circumference and Serum Lipid Levels with Essential Hypertension

Objective To explore the relationship of different body mass index, waist circumference and serum lipidlevels with essential hypertension among residents of Ningbo. And to explore the predictive value of BMI and WC(Waist Cir-cumference) for hypertension. Methods Adopting cluster sampling, 2 303 people(1 081 cases of hypertension and 1 222 people with normal blood pressure) were collected in the four townships of Ningbo City. We conducted questionnaires, physi-cal examination and blood lipid testing for all of subjects. WC group: WC≥85 cm in male or WC≥80 cm in female is centralobesity, and the others are normal. BMI groups: BMI≥24 kg/m2 is overweight, and BMI 24 kg/m2 is normal. The relationshipof BMI, WC and serum lipid levels with hypertension was analyzed by multivariate unconditional logistic regression model.The predictive value of BMI and WC for hypertension was analyzed by receiver operating characteristic(ROC) curve.Results WC, BMI, total cholesterol(TC), triglyceride(TG) and low density lipoprotein cholesterol(LDL-C) in hypertensiongroup were higher than those in control group(P 0.01). And WC, BMI, TG, LDL-C is the impact factor for hypertension.The overweight rate and central obesity rate in hypertension group were higher than control group(P 0.01). TG and LDL-Clevel abnormality, overweight and central obesity were the risk factors of hypertension. As a risk factor of hypertension, over-weight with central obesity group is higher than overweight with normal waistline group, simple central obesity group and nor-mal group. In the area under the ROC curve, BMI is higher than WC in both male and female population. Conclusion WC, BMI, TG and LDL-C abnormalities were risk factors for hypertension, and BMI was a better predictive factor for hyper-tension than WC.