Associations of body mass index and age with blood pressure among Chinese adults
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摘要: 目的 分析中国成人体质指数(BMI)、年龄与血压水平的相关性,为高血压的预防控制提供科学依据。方法 采用整群抽样方法在北京、重庆两地抽取79012名20~80岁参加健康体检的成年人,按年龄、性别描述其血压和BMI的分布情况;采用Pearson相关性分析检验BMI、年龄与血压之间的相关性,采用多分类logistic回归模型计算BMI对高血压的预测作用。结果 男、女性平均BMI在20~29岁时最低,分别为(23.9±3.5)和(20.6±2.5)kg/m2,男性在40~49岁最高,为(25.5±2.9)kg/m2,女性在60~69岁最高,为(24.6±3.3)kg/m2;男、女性收缩压均随年龄增加而上升,男性的舒张压在50~59岁时最高,为(81.6±11.8)mmHg,女性在60~69岁时最高,为(76.5±11.5)mmHg;相关分析结果显示,BMI与收缩压和舒张压均呈正相关(r=0.349、0.318,均P<0.001),年龄与BMI、收缩压、舒张压均呈正相关(r=0.194、0.454、0.226,均P<0.001);在控制年龄和性别后,多分类logistic回归分析结果显示,体重过低者发生血压正常高值、1级高血压和≥2级患高血压的风险分别为正常体重者的0.57、0.37和0.32倍,超重者发生血压正常高值、1级高血压和≥2级患高血压的风险分别为正常体重者的1.94、2.91和3.70倍,肥胖者发生血压正常高值、1级高血压和≥2级患高血压的风险分别为正常体重者的3.31、7.62和12.24倍。结论 老龄化、超重和肥胖均会增加高血压的患病风险,预防和控制高血压时应充分考虑干预的人群、时机和特征,从源头遏制高血压的流行。Abstract: Objective To study the associations between body mass index(BMI),age and blood pressure(BP)in Chinese adults.Methods A cross-sectional study was carried out among 79 012 Chinese adults aged 20-80 years in Beijing and Chongqing municipality.The distributions of BMI and BP were described by age and gender.Pearson correlation analysis and logistic regression were used.Results The mean BMI was lowest in the adults aged 20-29 years,with the average values of 23.9±3.5 kg/m2 and 20.6±2.5 kg/m2 for the men and women,respectively.The highest BMI was 25.5±2.9 kg/m2 for the men at the ages of 40-49 years and 24.6±3.3 kg/m2 for the women of 60-69 years old.Mean systolic BP was higher among the adults with elevated BMI and those with older age;the mean diastolic BP was the highest(81.6±11.8 mm Hg)for the men at the age of 50-59 years and that(76.5±11.5 mm Hg)for the women at the age of 60-69 years.Correlation analysis results showed that BMI was positively correlated with systolic BP and diastolic BP(r=0.349,0.318,P<0.001);age was also positively related to BMI,systolic BP,diastolic pressure(r=0.194,0.454,0.226,all P<0.001).The odd ratios (ORs) of prehypertension,stage I and stage II or above hypertension for the overweight adults were 1.94,2.91,and 3.70 and the ORs for obesity adults were 3.31,7.62,and 12.24 compared to the adults with normal BMI.Conclusion Aging and obesity can increase the risk of hypertension.These results imply the need to develop strategies for early prevention and control of hypertension in Chinese adults.
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Key words:
- blood pressure /
- age /
- body mass index /
- correlation
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