[Study on the relationship between body index and blood pressure in Chinese adult].

The authors use the anthropometry data of the Third National Nutrition Survey in China, and select the adult above 20-year-old as the study subjects in order to study the relationship between BMI and blood pressure value and to provide some reference data for defining the suitable BMI cut-off point of overweight and obesity in Chinese adult. The results show that the distribution of BMI varied with sex, age and areas; mean levels of systolic and diastolic blood pressure both gradually increased as BMI increased, multifactor linear regression analyses indicates there is obvious linear relationship between blood and BMI; The associations of BMI with high blood pressure were statistically significant after controlling for age, sex, area or smoking, logistic regression analyses indicate that odds ratios increased gradually at the different levels of BMI. These data quantify the strong associations of BMI with hypertension.