Abstract:

[Abstract] Objective  To explore the relationship of different body mass index, waist circumference and serum lipid levels with essential hypertension among residents of Ningbo. And to explore the predictive value of BMI and WC (Waist Circumference) 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, physical examination and blood lipid testing for all of subjects. WC group: WC≥85 cm in male or WC≥80 cm in female is central obesity, and the others are normal. BMI groups: BMI≥24 kg/m2 is overweight, and BMI <24 kg/m2 is normal. The relationship of 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 hypertension group 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-C level abnormality, overweight and central obesity were the risk factors of hypertension. As a risk factor of hypertension, overweight with central obesity group is higher than overweight with normal waistline group, simple central obesity group and normal 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 hypertension than WC.

Key words: hypertension, body mass index, waist circumference, Lipid levels, cholesterol, riglycerides, lipoproteins, LDL