北京市顺义区学龄儿童少年体重指数与体脂百分比关系的研究黄晓凤张悦吕金昌摘要：目的分析北京市順义区儿童少年体重指数（BMI）和体脂百分比（PBF）的关系。方法采用整群抽样法抽取顺义区小学生1477人，其中男生804人，平均年龄8.3岁，女生673人，平均年龄8.2岁;初中生1996人，其中男生1028人，平均年龄13.7岁，女生968人，平均年龄13.6岁，使用人体成分分析仪H-Key350测定PBF，并计算BMI，比较两者判定超重、肥胖的一致性。结果北京市顺义区中小学生BMI与PBF两者呈正相关，小学生总体、男生、女生BMI与PBF均呈高度正相关，相关系数分别为0.907、0.919和0.904;初中生总体、男生、女生BMI与PBF的相关系数分别为0.694、0.833和0.845;与BMI标准判定超重相比，PBF判定的超重有较高特异度，小学和初中分别为84.71%和80.47%;而灵敏度差为14.42%和20.24%;与BMI标准判定肥胖相比，PBF判定的肥胖有较高灵敏度，小学和初中分别为99.86%和91.93%，而特异度差，只有73.56%和61.27%。结论用PBF判断超重标准对于确定顺义区初中生和小学生超重和肥胖分别有较高特异度和灵敏度，可以使用PBF对学龄儿童开展超重和肥胖的筛查。关键词：体重指数;体脂百分比;儿童;青少年;：R179：ADOI：10.3969/j.issn.1006-1959.2019.07.040：1006-1959（2019）07-0134-03Abstract：ObjectiveToanalyzetherelationshipbetweenbodymassindex（BMI）andbodyfatpercentage（PBF）inchildreninShunyiDistrict，Bei激ng.MethodsAtotalof1477primaryschoolstudentsinShunyiDistrictwereselectedbyclustersamplingmethod，including804malestudents，withanaverageageof8.3yearsand673femalestudents，withanaverageageof8.2years.Therewere1996juniorhighschoolstudents，including1028malestudents，withanaverageageof13.7yearsand968femalestudents.Theaverageagewas13.6years.ThePBFwasmeasuredusingthebodycompositionanalyzerH-Key350，andtheBMIwascalculated.Thetwowerecomparedtodeterminetheconsistencyofoverweightandobesity.ResultsTherewasapositivecorrelationbetweenBMIandPBFinprimaryandmiddleschoolstudentsinShunyiDistrictofBei激ng.TheBMIandPBFofprimaryschoolstudents，boysandgirlswerehighlypositivelycorrelated，withcorrelationcoefficientsof0.907，0.919and0.904respectively.Juniorhighschoolstudents，boys，girlsBMIandPBF.Thecorrelationcoefficientsare0.694，0.833，and0.845，respectivelyparedwiththeBMIstandard，theoverweightofPBFhashigherspecificity，84.71%and80.47%forprimaryandjuniorhighschoolsrespectively，and14.42%and20.24%forsensitivityparedwithobesityjudgedbyBMIstandard，obesitydeterminedbyPBFhashighersensitivity，99.86%and91.93%inprimaryandjuniorhighschool，respectively，andpoorspecificity，only73.56%and61.27%.ConclusionUsingPBFtojudgetheoverweightcriteriahashigherspecificityandsensitivityfordeterminingtheoverweightandobesityofjuniorhighschoolstudentsandprimaryschoolstudentsinShunyiDistrict.PBFcanbeusedtoscreenoverweightandobesityinschool-agechildren.-全文完-