title: Accuracy of different cutoff points of body mass index to identify overweight according to body fat values estimated by DEXA.
abstract: OBJECTIVE
  To evaluate the sensitivity and specificity of different cutoff points of body mass index for predicting overweight/obesity according to body fat values estimated by DEXA among Brazilian adolescents.
  
  
  METHODS
  Cross-sectional study including 229 male adolescents aged 10-15 years, in which body adiposity and anthropometric measures were assessed. Nutritional status was classified by BMI according to cutoff points described in scientific literature.
  
  
  RESULTS
  Moderate agreements were observed between body fat estimated by DEXA and cutoffs proposed by Cole et al. (K=0.61), Conde and Monteiro (K=0.65), Must et al. (K=0.61) and WHO (K=0.63). The BMI in continuous form showed good agreement with the Dexa (ICC=0.72). The highest sensitivity was observed for cutoff by Conde and Monteiro (0.74 [0.62, 0.84]) and the highest specificity by Cole et al. (0.98 [0.94, 0.99]). For the areas under the ROC curve of cutoff points analyzed, significant difference comparing the cutoff points by Cole et al. and Conde and Monteiro (0.0449 [0.00294, 0.0927]) was observed.
  
  
  CONCLUSIONS
  The cutoff proposed by Conde and Monteiro was more sensitive in identifying overweight and obesity when compared to the reference method, and the cutoff proposed by Cole et al. presented the highest specificity for such outcomes.
authors.affiliation: Universidade Estadual Paulista (UNESP), Programa de Pós-Graduação em Fisioterapia, Presidente Prudente, SP, Brazil.
authors.forename: Caroline Cristina
authors.initials: CC
authors.lastname: Anzolin
authors.affiliation: Universidade Federal de Santa Catarina (UFSC), Departamento de Educação Física, Florianópolis, SC, Brazil.
authors.forename: Diego Augusto Santos
authors.initials: DA
authors.lastname: Silva
authors.affiliation: Universidade Estadual Paulista (UNESP), Programa de Pós-Graduação em Fisioterapia, Presidente Prudente, SP, Brazil.
authors.forename: Edner Fernando
authors.initials: EF
authors.lastname: Zanuto
authors.affiliation: Universidade de São Paulo (USP), Escola de Educação Física e Esporte, Ribeirão Preto, SP, Brazil.
authors.forename: Suziane Ungari
authors.initials: SU
authors.lastname: Cayres
authors.affiliation: Universidade Estadual Paulista (UNESP), Programa de Pós-Graduação em Fisioterapia, Presidente Prudente, SP, Brazil.
authors.forename: Jamile Sanches
authors.initials: JS
authors.lastname: Codogno
authors.affiliation: Universidade Estadual Paulista (UNESP), Programa de Pós-Graduação em Fisioterapia, Presidente Prudente, SP, Brazil.
authors.forename: Paulo
authors.initials: P
authors.lastname: Costa Junior
authors.affiliation: Universidade de São Paulo (USP), Escola de Educação Física e Esporte, Ribeirão Preto, SP, Brazil.
authors.forename: Dalmo Roberto Lopes
authors.initials: DR
authors.lastname: Machado
authors.affiliation: Universidade Estadual Paulista (UNESP), Programa de Pós-Graduação em Fisioterapia, Presidente Prudente, SP, Brazil. Electronic address: diegochristofaro@yahoo.com.br.
authors.forename: Diego Giulliano Destro
authors.initials: DG
authors.lastname: Christofaro
mesh_terms: D000293:Adolescent; D000886:Anthropometry / Q000379:methods; D001823:Body Composition; D015992:Body Mass Index; D001938:Brazil; D002648:Child; D003430:Cross-Sectional Studies; D006801:Humans; D008297:Male; D050177:Overweight / Q000145:classification / Q000175:diagnosis*; D063766:Pediatric Obesity / Q000175:diagnosis*; D011379:Prognosis; D012372:ROC Curve; D012680:Sensitivity and Specificity
keywords: Adolescent health; Body composition; Composição corporal; Obesidade; Obesity; Overweight; Saúde do adolescente; Sensibilidade e especificidade; Sensitivity and specificity; Sobrepeso