Smita Nambiar1, Helen Truby, Rebecca A Abbott, Peter S W Davies. 1. The University of Queensland, Children's Nutrition Research Centre, School of Medicine, Royal Children's Hospital, Herston, QLD, Australia. s.nambiar@uq.edu.au
Abstract
AIM: To assess the statistical validity of the waist-height ratio (WHtR) as an appropriate method of adjusting waist circumference (WC) for height in children and adolescents. INTRODUCTION: Recently, WHtR has been proposed to be of greater value than body mass index (BMI), in predicting obesity-related cardiovascular co-morbidities in children. This index, however, is yet to be extensively validated within the paediatric population. METHODS: Height and WC in centimetres, were measured in 3597 children from grades 1 (5-7 years), 5 (9-11 years) and 10 (15-17 years). Log regression analyses using WC and height were performed to determine appropriate powers (p) to raise height, to completely adjust the index for height, by sex and grade. Correlations between WHtR and height were assessed. RESULTS: Statistically, the WHtR is only valid for use among grade 1 boys and girls (p = 1.09 [95%CI 0.95-1.23] and p = 1.07 [95%CI 0.92-1.22], respectively) and grade 10 girls p = 0.85 (95%CI 0.62-1.08). However, the error (0.25%-1.85%), associated with the use of this index, in all ages and both sexes is clinically and biologically acceptable. CONCLUSION: The WHtR is a clinically and biologically valid index to use among Australian children and adolescents.
AIM: To assess the statistical validity of the waist-height ratio (WHtR) as an appropriate method of adjusting waist circumference (WC) for height in children and adolescents. INTRODUCTION: Recently, WHtR has been proposed to be of greater value than body mass index (BMI), in predicting obesity-related cardiovascular co-morbidities in children. This index, however, is yet to be extensively validated within the paediatric population. METHODS: Height and WC in centimetres, were measured in 3597 children from grades 1 (5-7 years), 5 (9-11 years) and 10 (15-17 years). Log regression analyses using WC and height were performed to determine appropriate powers (p) to raise height, to completely adjust the index for height, by sex and grade. Correlations between WHtR and height were assessed. RESULTS: Statistically, the WHtR is only valid for use among grade 1 boys and girls (p = 1.09 [95%CI 0.95-1.23] and p = 1.07 [95%CI 0.92-1.22], respectively) and grade 10 girls p = 0.85 (95%CI 0.62-1.08). However, the error (0.25%-1.85%), associated with the use of this index, in all ages and both sexes is clinically and biologically acceptable. CONCLUSION: The WHtR is a clinically and biologically valid index to use among Australian children and adolescents.
Authors: Susan Kohl Malone; Babette Zemel; Charlene Compher; Margaret Souders; Jesse Chittams; Aleda Leis Thompson; Allan Pack; Terri H Lipman Journal: Chronobiol Int Date: 2016-08-11 Impact factor: 2.877
Authors: Lauren T Ptomey; Richard A Washburn; Jeannine R Goetz; Debra K Sullivan; Cheryl A Gibson; Matthew S Mayo; Ron Krebill; Anna M Gorczyca; Robert N Montgomery; Jeffery J Honas; Brian C Helsel; Joseph E Donnelly Journal: Pediatrics Date: 2021-08-19 Impact factor: 9.703
Authors: Barbara Vanaelst; Nathalie Michels; Els Clays; Diana Herrmann; Inge Huybrechts; Isabelle Sioen; Krishna Vyncke; Stefaan De Henauw Journal: Int J Behav Med Date: 2014-04
Authors: Leigh Small; Darya Bonds-McClain; Bernadette Melnyk; Linda Vaughan; Alex M Gannon Journal: J Pediatr Health Care Date: 2013-03-17 Impact factor: 1.812
Authors: Marie Teder; Evalotte Mörelius; Per Bolme; Maria Nordwall; Joakim Ekberg; Toomas Timpka Journal: BMJ Open Date: 2012-03-02 Impact factor: 2.692