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Poverty and InequalitySexual and Reproductive HealthFamily, Maternal & Child HealthMethodology

Adiposity assessments: Agreement between dual-energy X-ray absorptiometry and anthropometric measures in U.S. children

TitleAdiposity assessments: Agreement between dual-energy X-ray absorptiometry and anthropometric measures in U.S. children
Publication TypeJournal Article
Year of Publication2014
AuthorsTuan, NT, Wang, Y
JournalObesity
Volume22
Pagination1495-1504
ISBN Number19307381 (ISSN)
KeywordsAdolescent, Adult, Anthropometry, article, Black person, body fat, body mass, Caucasian, Child, cross-sectional study, dual energy X ray absorptiometry, ethnic difference, Female, human, Male, Mexican American, Obesity, prediction, race difference, risk factor, school child, screening test, sex difference, skinfold thickness, United States, Waist Circumference, waist to height ratio, Young Adult
Abstract

Objectives To evaluate performance of anthropometric measures relative to percentage body fat (%BF) measured by dual-energy X-ray absorptiometry in children. Methods Data from 8 to 19-year-old U.S. children enrolled in a nationally representative cross-sectional survey in 2001-2004 (n=5,355) with measured %BF, body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR), and triceps skinfold thickness (TSF) were used. Agreement and prediction were evaluated based on standardized regression coefficients (β), kappa, and the area under the receiver-operating characteristic curves (AUC). Results The association between Z-scores for %BF and anthropometric measures was strong (β of ∼0.75-0.90, kappa of ∼0.60-0.75, and AUC of ∼0.87-0.98; P < 0.001 for all), with only some variations by race-ethnicity, mostly in girls. In boys, TSF and WHtR Z-scores had stronger agreement with %BF than BMI (β of 0.91 and 0.86 vs. 0.79, kappa of 0.75 and 0.71 vs. 0.59, and AUC of 0.97 and 0.97 vs. 0.91; P < 0.05 for all). In boys with BMI