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Type: Artigo
Title: Body Mass Index Cutoff Point Estimation As Obesity Diagnostic Criteria In Down Syndrome Adolescents
Author: Samur-San-Martin
Juan Eduardo; Goncalves
Ezequiel Moreira; Bertapelli
Fabio; Mendes
Roberto Teixeira; Guerra-Junior
Abstract: Adolescents with Down syndrome (DS) show high rate of overweight and tend to accumulate high amount of fat compared to the same people without the syndrome. Objective: To estimate the cutoff point of the Body Mass Index (BMI) for the diagnosis of obesity in adolescents with DS according to different references for BMI in relation to the percentage of body fat (%BF) measured by dual-energy X-ray absorptiometry (DXA). Methods: The sample was composed of 34 adolescents with DS (aged: 10 to 17 years old). BMI was evaluated according to the references of the International Obesity Task Force (IOTF), the World Health Organization (WHO) for the general population, and Myrelid et al. and Styles et al. for people with DS. The %BF was assessed by whole body DXA and classified according to National Health And Nutrition Examination Survey (NHANES, 2011). Results: The boys were significantly taller than the girls and this %BF higher than boys. All references who have used BMI to assess obesity was positively associated with %BF measured by DXA in the diagnosis of obesity. Using the ROC curve in relation to %BF by DXA, all references showed high sensitivity, but the z-score of BMI by WHO showed better specificity, with the value of the accuracy of 0.82 for the cutoff point above 2.14. Conclusions: All the references used for the diagnosis of obesity were associated with %BF measured by DXA, and the cutoff point of z-scores Anthropometry. above 2.14 by WHO showed better specificity.
Subject: Down Syndrome
Body Mass Index
Roc Curve
Editor: Aula Medica Ediciones
Rights: fechado
Identifier DOI: 10.20960/nh.671
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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