Comparison of body composition assessment by DXA and BIA according to the body mass index: A retrospective study on 3655 measures

Najate Achamrah, Guillaume Colange, Julie Delay, Agnès Rimbert, Vanessa Folope, André Petit, Sébastien Grigioni, Pierre Déchelotte and Moïse Coëffier

PLOS ONE, 2018, vol. 13, issue 7, 1-13

Abstract: Background and aims: Body composition assessment is often used in clinical practice for nutritional evaluation and monitoring. The standard method, dual-energy X-ray absorptiometry (DXA), is hardly feasible in routine clinical practice contrary to Bioelectrical Impedance Analysis (BIA) method. We thus aimed to compare body composition assessment by DXA and BIA according to the body mass index (BMI) in a large cohort. Methods: Retrospectively, we analysed DXA and BIA measures in patients followed in a Nutrition Unit from 2010 to 2016. Body composition was assessed under standardized conditions in the morning, after a fasting period of 12 h, by DXA (Lunar Prodigy Advance) and BIA (Bodystat QuadScan 4000, Manufacturer’s equation). Bland-Altman test was performed for each class of BMI (kg/m2) and fat mass and fat free mass values were compared using Kruskal-Wallis test. Pearson correlations were also performed and the concordance coefficient of Lin was calculated. Results: Whatever the BMI, BIA and DXA methods reported higher concordance for values of FM than FFM. Body composition values were very closed for patients with BMI between 16 and 18,5 (difference 18,5 and BMI

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0200465

DOI: 10.1371/journal.pone.0200465

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