Freedman, DS;
Woo, JG;
Ogden, CL;
Xu, JH;
Cole, TJ;
(2019)
Distance and Percent Distance from Median BMI as Alternatives to BMI z-score.
British Journal of Nutrition
pp. 1-25.
10.1017/S0007114519002046.
(In press).
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Abstract
Body mass index z-score (BMIz) based on the CDC growth charts is widely used, but it is inaccurate above the 97th percentile. We explored the performance of alternative metrics based on the absolute distance or % distance of a child's BMI from the median BMI for sex and age.We used longitudinal data from 5628 children who were first examined < 12 y to compare the tracking of three BMI metrics: distance from median, % distance from median, and % distance from median on a log scale. We also explored the effects of adjusting these metrics for age differences in the distribution of BMI. The intra-class correlation coefficient (ICC) was used to compare tracking of the metrics.
| Type: | Article |
|---|---|
| Title: | Distance and Percent Distance from Median BMI as Alternatives to BMI z-score |
| Location: | England |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1017/S0007114519002046 |
| Publisher version: | https://doi.org/10.1017/S0007114519002046 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | BMI expressed as a percentage of the 95th percentile, BMI, BMI body mass index, BMIz BMI-for-age z-score, CDC Centers for Disease Control and Prevention, L power transformation for normality, M median, S coefficient of variation, children, metrics, obesity |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > UCL GOS Institute of Child Health > Population, Policy and Practice Dept |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10080529 |
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