title: Evaluation of body adiposity index (BAI) to estimate percent body fat in an indigenous population.
abstract: OBJECTIVE
  The aim of this study was to evaluate the usefulness of Body Adiposity Index (BAI) as a predictor of body fat in Xavante Indians and to investigate which anthropometric measures of adiposity best correlate with body fat in this population.
  
  
  METHODS
  We evaluated 974 individuals (476 male), aged 42.3 ± 19.5 years. Percentage of body fat (%BF) determined by bioimpedance analysis (BIA) was used as the reference measure of adiposity. Bland-Altman analysis was used to assess the agreement between the two methods: BAI and BIA. Associations between anthropometric measures of adiposity were investigated by Pearson correlation analysis.
  
  
  RESULTS
  BAI overestimates %BF (mean difference: 4.10%), mainly at lower levels of adiposity. Significant correlations were found between %BF and all measurements, being the strongest correlation with BAI. However, stratified analyses according to gender showed that among men waist circumference has the strongest correlation (r = 0.73, p < 0.001) and among women BAI (r = 0.71, p < 0.001), BMI (r = 0.69, p < 0.001) and waist circumference (r = 0.70, p < 0.001) performed similarly.
  
  
  CONCLUSIONS
  BAI can be a useful tool to predict %BF in Xavante Indians, although it has some limitations. However, it is not a better predictor of adiposity than waist circumference in men or BMI and waist circumference in women.
authors.affiliation: Disciplina de Endocrinologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil. Electronic address: pkuhn@unifesp.br.
authors.forename: Patricia C
authors.initials: PC
authors.lastname: Kuhn
authors.affiliation: Disciplina de Endocrinologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil. Electronic address: botelhovieira@hotmail.com.
authors.forename: João Paulo B
authors.initials: JP
authors.lastname: Vieira Filho
authors.affiliation: Disciplina de Endocrinologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil. Electronic address: luciana_franco@yahoo.com.
authors.forename: Luciana
authors.initials: L
authors.lastname: Franco
authors.affiliation: Departamento de Medicina Social, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil. Electronic address: aafabbro@fmrp.usp.br.
authors.forename: Amaury
authors.initials: A
authors.lastname: Dal Fabbro
authors.affiliation: Departamento de Medicina Social, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil. Electronic address: lfranco@fmrp.usp.br.
authors.forename: Laercio J
authors.initials: LJ
authors.lastname: Franco
authors.affiliation: Disciplina de Endocrinologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil. Electronic address: rmoises@unifesp.br.
authors.forename: Regina S
authors.initials: RS
authors.lastname: Moises
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism*; D050154:Adiposity; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044467:American Indian or Alaska Native; D015992:Body Mass Index; D001835:Body Weight; D003430:Cross-Sectional Studies; D017097:Electric Impedance; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D055105:Waist Circumference; D055815:Young Adult
keywords: Anthropometric measures; Body adiposity index; Xavante Indians