某社区中年人群体质指数和腰围身高比与血压的关系研究

目的 分析比较某社区中年人群体质指数（body mass index，BMI）和腰围身高比（waist-to-height ratio，WHtR）与血压的关系及其对高血压的预测效果。方法 以在金昌市金川区某社区开展的健康行为因素调查中4 088例中年人为研究对象，采用线性回归模型比较血压（收缩压和舒张压）随BMI及WHtR的数量变化，并用受试者工作特征（receiver operating characteristic，ROC）曲线评价BMI及WHtR对高血压的预测效果及适宜切点。结果 该社区中年人群的收缩压和舒张压均随着BMI、WHtR的增大而升高，且BMI对血压的升高作用大于WHtR。多元线性回归分析中，WHtR与不同性别中年人群收缩压、舒张压均无相关关系。男性BMI较WHtR对高血压的预测效果更优（Z=2.06，P=0.020），女性BMI较WHtR对高血压的预测效果也更优（Z=1.77，P=0.038）。结论 该社区中年人群中BMI与血压（收缩压和舒张压）的相关性较WHtR强，应将BMI≥24.0 kg/m2和（或）WHtR≥0.5的中年人群做为该社区高血压防控的重点人群。

Study on relation of body mass index and waist-to-height ratio to blood pressure in middle-aged community groups

Objective To explore the correlation of body mass index (BMI) and waist-to-height ratio (WHtR) with blood pressure as well as to assess the efficacy of the two obesity index in the prediction of hypertension in a middle-aged community groups.Methods Total 4 088 middle-aged residents from one community of Jinchuan area in Jinchang City were included in this study.Basic health information was collected using a health-behavior factors survey.Linear regression model analysis was carried out on the relationship between blood pressure(systolic and diastolic) and BMI,WHtR.The efficacy and appropriate cut-off values of BMI and WHtR in the prediction of hypertension were assessed using receiver operating characteristic curve (ROC).Results Systolic and diastolic pressures increased with increasing BMI and WHtR.The effect of BMI on blood pressure was greater than that of WHtR.The prediction efficacy of BMI on hypertension were better than that of WHtR no matter male (Z=2.06,P=0.020) or female (Z=1.77,P=0.038).Conclusions BMI has a stronger correlation with blood pressure than that of WHtR in this middle-aged community residents.People with BMI ≥ 24.0 kg/m2 and/or WHtR≥0.5 should be the key residents for hypertension prevention and control.