SciELO - Scientific Electronic Library Online

 
vol.15 issue3Reproducibility of adolescent sedentary activity questionnaire (ASAQ) in Brazilian adolescents author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista Brasileira de Cineantropometria & Desempenho Humano

On-line version ISSN 1980-0037

Abstract

LEAL, Danielle Biazzi; COSTA, Filipe Ferreira da  and  ASSIS, Maria Alice Altenburg de. Sensitivity and specificity of body mass index-based classification systems for overweight in children 7-10 years old. Rev. bras. cineantropom. desempenho hum. [online]. 2013, vol.15, n.3, pp.267-275. ISSN 1980-0037.  https://doi.org/10.5007/1980-0037.2013v15n3p267.

The objective of this study was to compare the sensitivity and specificity of BMI-based classification systems for detecting excess body fat in schoolchildren. A total of 2,795 schoolchildren aged 7 to 10 years were examined. Excess body fat was defined as the standardized residuals of sum of three skinfolds thickness ranking at or above the 90th percentile. The international BMI-based systems recommended by the International Obesity Task Force (IOTF) and the World Health Organization (WHO-2007) were evaluated on the basis of their sensitivity and specificity for detecting excess body fat and compared with a national BMI reference (Brazil-2006). The positive (LR+) and negative (LR-) likelihood ratios analysis was also used to compare the diagnostic accuracies of the three BMI criteria. The three classification systems presented moderately high sensitivity (78.4-98.6%) and specificity (75.9-91.6%) for both genders. Overall, the three classification systems showed both LR+ and LR- values consistent with a diagnosis of moderate evidence for overweight (LR+ above five and LR- below 0.2). The results showed that the three BMI classification systems can be used as screening instruments of excess body fat. However, the performance of the Brazil-2006 classification system was superior because it showed the best balance between the diagnostic accuracy indices.

Keywords : Adiposity; Body mass index; Children; Sensitivity and Specificity.

        · abstract in Portuguese     · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License