摘要
目的 :研究标准体重、体重指数 (BMI)、脂肪百分率 (F %)三种肥胖评定方法的相互关系及诊断价值的评价。对象与方法 :采用临床流行病学方法对 5 85例 19岁以上来院就诊及健康查体者的身高、体重及双能X线骨密度测定 (DEXA)全身成分分析数据进行研究 ,对标准体重、体重指数 (BMI)、脂肪百分率 (F %)结果进行研究及统计分析 ,DEXA所测定的脂肪百分率 (F %)作为标准诊断。结果及分析 :标准体重法、体重指数 (BMI)法与脂肪百分率 (F %)法呈直线相关关系 ,r分别为 0 .63 2 3和 0 .5 690 ,P <0 .0 0 1,前两法r =0 .93 84,P <0 .0 0 1,灵敏度分别为 5 3 .2 8%和 49.18%,特异度分别为 80 .3 4%和 79.66%,U值 =1.3 682 <1.96,P >0 .0 5 ,故此两法在统计学上无显著性差异。结论 :标准体重测定与体重指数测定两法均可作为肥胖判定的有效方法 ,但有一定的漏诊率 ,应用DEXA所测定的脂肪百分率 (F %)更为可靠 。
Objective:To compare the relationship and the diagnostic value of three measurements of adiposity: standard weight,body mass index(BMI) and percentage of fat (%Fat).Methods: With the methods of Clinical Epidemiology,body composition of 585 individuals aged above 19 was assessed by dual energy X ray absorptiometry (DEXA),taking the direct estimation of total and segmental body fat as a criterion method to estimate percentage fat .Results: The standard weight and BMI method were positively correlated with the %Fat ( r 1=0.6323,r 2=0.5690,P <0.001),the correlation coefficient of the former of two measurements was r=0.9384,P <0.001 and the sensitivities were 53.28% and 49.18%,the speciaties were 80.34% and 79.66%. Both did not change significantly ( U=1.3682<1.96,P >0.05 ).Conclusions: the standard weight and the body mass index (BMI) methods are useful measurements of adiposity though they have some potential bias,it is more credible that the %Fat was assessed by DEXA. Further study should be conducted to establish the perfect definition of obesity of the three measurements for the Chinese people.
出处
《广东药学院学报》
CAS
2003年第4期369-371,共3页
Academic Journal of Guangdong College of Pharmacy
