Agreement Analysis among Measures of Thinness and Obesity Assessment in Iranian School Children and Adolescents

AUTHORS

Seyyed-Mohammad-Taghi Ayatollahi 1 , Zahra Bagheri 1 , Seyyed-Taghi Heydari 2 , *

1 Department of Biostatistics, Shiraz University of Medical Sciences, Shiraz, IR Iran

2 Jahrom University of Medical Sciences, Jahrom, IR Iran

How to Cite: Ayatollahi S, Bagheri Z, Heydari S. Agreement Analysis among Measures of Thinness and Obesity Assessment in Iranian School Children and Adolescents, Asian J Sports Med. Online ahead of Print ; 4(4):34247. doi: 10.5812/asjsm.34247.

ARTICLE INFORMATION

Asian Journal of Sports Medicine: 4 (4); 272-280
Published Online: August 1, 2013
Article Type: Research Article
Received: December 6, 2012
Accepted: July 29, 2013
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Abstract

Purpose: This study investigated the agreement of four anthropometric-based measurements including weight-for-height (WH), body mass index-for-age (BMI), mid-upper arm circumference-for-age (MUAC) and triceps skinfold thickness-for-age (TST) to identify underweight and overweight children and adolescents.

Methods: Two data sets were used in this research. The first one was a multistage random sample of 2397 healthy school children in pre-pubertal stage in Shiraz. The second data set consisted of 487 healthy students in pubertal stage and 558 students in post-pubertal stage. The parametric LMS method was used to construct reference centiles curves for each measure. The Kappa statistic was applied to examine the pairwise agreement of the four indices for detecting thinness and obesity.

Results: Generally, the pairwise agreement of adiposity measures was higher for identifying obesity than thinness. There was an excellent agreement between WH and BMI for detecting both thin and obese children in almost all subgroups (P<0.001). MUAC had an excellent agreement with BMI in pre-pubertal individuals (P<0.001). However, TST had a weak agreement with the other three indices for detecting thinness and weak to good agreement for classification of obesity.

Conclusion: The performance of the four anthropometric-based measurements varied by sex and maturity level. MUAC as a simple and low-cost screening tool can also be used as an alternative to BMI for obesity assessment among pre-pubertal groups.

Keywords

Anthropometry Body Composition Obesity Adolescents Children Agreement Analysis

© 2013, Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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