Effects of body mass index on blood pressure control rate in elderly coronary heart disease outpatients with hypertension

To explore the influences of body mass index (BMI) on blood pressure control rate in elderly coronary heart disease (CHD) outpatients with hypertension. In this multicenter, non-intervention and cross-sectional survey, the elderly coronary heart disease patients with hypertension aged 60 years or over were recruited from 165 hospitals in 21 provinces or cities across China from April to July 2011, and 5 140 cases of elderly CHD patients with hypertension were finally included into the study. The cases were divided into low BMI group ( =130 cases), normal body mass index (BMI) group ( =1 390 cases), overweight ( =2 418 cases), obesity group ( =662 cases) according to the different levels of BMI. Clinical data and blood pressure control rate were compared among the groups, and relationships of different BMI levels with blood pressure control rate were analyzed by the binary classification unconditioned Logistic regression equation. There was a statistically significant difference in blood pressure control rate