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Cardiometabolic Risk Assessments by Body Mass Indexz-Score or Waist-to-Height Ratio in a Multiethnic Sample of Sixth-Graders
Kahn, Henry S. El Ghormli, Laure Jago, Russell Foster, Gary D. McMurray, Robert G. Buse, John B. Stadler, Diane D. Trevino, Roberto P. Baranowski, Tom HEALTHY Study Group
Kahn, Henry S.
El Ghormli, Laure
Jago, Russell
Foster, Gary D.
McMurray, Robert G.
Buse, John B.
Stadler, Diane D.
Trevino, Roberto P.
Baranowski, Tom
HEALTHY Study Group
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2014-07-14
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https://doi.org/10.1155/2014/421658
Abstract
Convention defines pediatric adiposity by the body mass index -score (BMIz) referenced to normative growth charts. Waist-to-height ratio (WHtR) does not depend on sex-and-age references. In the HEALTHY Study enrollment sample, we compared BMIz with WHtR for ability to identify adverse cardiometabolic risk. Among 5,482 sixth-grade students from 42 middle schools, we estimated explanatory variations () and standardized beta coefficients of BMIz or WHtR for cardiometabolic risk factors: insulin resistance (HOMA-IR), lipids, blood pressures, and glucose. For each risk outcome variable, we prepared adjusted regression models for four subpopulations stratified by sex and high versus lower fatness. For HOMA-IR, attributed to BMIz or WHtR was 19%–28% among high-fatness and 8%–13% among lower-fatness students. for lipid variables was 4%–9% among high-fatness and 2%–7% among lower-fatness students. In the lower-fatness subpopulations, the standardized coefficients for total cholesterol/HDL cholesterol and triglycerides tended to be weaker for BMIz (0.13–0.20) than for WHtR (0.17–0.28). Among high-fatness students, BMIz and WHtR correlated with blood pressures for Hispanics and whites, but not black boys (systolic) or girls (systolic and diastolic). In 11-12 year olds, assessments by WHtR can provide cardiometabolic risk estimates similar to conventional BMIz without requiring reference to a normative growth chart.
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Henry S. Kahn, Laure El ghormli, Russell Jago, Gary D. Foster, Robert G. McMurray, John B. Buse, Diane D. Stadler, Roberto P. Treviño, Tom Baranowski, undefined HEALTHY Study Group, "Cardiometabolic Risk Assessments by Body Mass Index z-Score or Waist-to-Height Ratio in a Multiethnic Sample of Sixth-Graders", Journal of Obesity, vol. 2014, Article ID 421658, 10 pages, 2014. https://doi.org/10.1155/2014/421658
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Journal of Obesity, Vol. 2014
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