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Accuracy of body mass index cutoffs for classifying obesity in Chilean children and adolescents

dc.contributor.authorGómez-Campos R.
dc.contributor.authorLanger R.D.
dc.contributor.authorDe Fátima Guimarães R.
dc.contributor.authorMartini M.C.S.
dc.contributor.authorCossio-Bolaños M.
dc.contributor.authorDe Arruda M.
dc.contributor.authorGuerra-Júnior G.
dc.contributor.authorGonçalves E.M.
dc.date.accessioned2020-09-02T22:19:56Z
dc.date.available2020-09-02T22:19:56Z
dc.date.issued2016
dc.identifier10.3390/ijerph13050472
dc.identifier.citation13, 5, -
dc.identifier.issn16617827
dc.identifier.urihttps://hdl.handle.net/20.500.12728/4819
dc.descriptionObjective: To determine the accuracy of two international Body Mass Index (BMI) cut-offs for classifying obesity compared to the percentage of fat mass (%FM) assessed by Dual-Energy X-ray Absorptiometry (DXA) in a Chilean sample of children and adolescents; Material and Methods: The subjects studied included 280 children and adolescents (125 girls and 155 boys) aged 8 to 17 years. Weight and height were measured. The BMI was calculated. Two international references (IOFT and WHO) were used as cut-off points. The %FM was assessed by DXA. The receiver operating characteristic (ROC) curve was used to assess the performance of BMI in detecting obesity on the basis of %FM; Results: A high correlation was observed between the %FM measured by the DXA and the Z-scores of IOTF and WHO scores in the Chilean adolescents separated by sex (r = 0.78–0.80). Differences occurred in both references (IOFT and WHO) in relation to the criteria (p < 0.001). Both references demonstrated a good ability to predict sensitivity (between 84% and 93%) and specificity (between 83% and 88%) in both sexes of children and adolescents; Conclusions: A high correlation was observed between the Z-score of the BMI with the percentage of fat determined by the DXA. Despite this, the classifications using the different BMI cut-off points showed discrepancies. This suggests that the cut-off points selected to predict obesity in this sample should be viewed with caution. © 2016 by the authors; licensee MDPI, Basel, Switzerland.
dc.language.isoen
dc.publisherMDPI AG
dc.subjectBody Mass Index
dc.subjectChile
dc.subjectCut-off points
dc.subjectDXA
dc.subjectObesity
dc.subjectaccuracy assessment
dc.subjectbody mass
dc.subjectchild health
dc.subjectfat
dc.subjectobesity
dc.subjectadolescent
dc.subjectanthropometric parameters
dc.subjectArticle
dc.subjectbody height
dc.subjectbody mass
dc.subjectbody weight
dc.subjectchild
dc.subjectChilean
dc.subjectcontrolled study
dc.subjectcross-sectional study
dc.subjectdiagnostic accuracy
dc.subjectdiagnostic test accuracy study
dc.subjectdisease classification
dc.subjectdual energy X ray absorptiometry
dc.subjectfemale
dc.subjecthuman
dc.subjectmajor clinical study
dc.subjectmale
dc.subjectobesity
dc.subjectpercentage of fat mass
dc.subjectpredictive value
dc.subjectreceiver operating characteristic
dc.subjectsensitivity and specificity
dc.subjectstandard
dc.subjectbody composition
dc.subjectChile
dc.subjectobesity
dc.subjectphoton absorptiometry
dc.subjectprevalence
dc.subjectreproducibility
dc.subjectsex difference
dc.subjectChile
dc.subjectAbsorptiometry, Photon
dc.subjectAdolescent
dc.subjectBody Composition
dc.subjectBody Mass Index
dc.subjectBody Weight
dc.subjectChild
dc.subjectChile
dc.subjectCross-Sectional Studies
dc.subjectFemale
dc.subjectHumans
dc.subjectMale
dc.subjectObesity
dc.subjectPrevalence
dc.subjectReference Standards
dc.subjectReproducibility of Results
dc.subjectSex Factors
dc.titleAccuracy of body mass index cutoffs for classifying obesity in Chilean children and adolescents
dc.typeArticle


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