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Using SITAR (SuperImposition by Translation and Rotation) to Estimate Age at Peak Height Velocity in Avon Longitudinal Study of Parents and Children

Overview
Journal Wellcome Open Res
Specialty Biomedical Engineering
Date 2019 Jan 4
PMID 30345378
Citations 35
Authors
Monika Frysz
Laura D Howe
Jonathan H Tobias
Lavinia Paternoster
Affiliations
Soon will be listed here.
Abstract

Puberty is a time of substantial biological and psychological changes. One of the hallmarks of puberty is a rapid growth spurt, however its timing varies between individuals. The impact of pubertal timing on later health outcomes has been of interest in life course epidemiology, however its measurement can be challenging. Age at peak height velocity (aPHV) offers an objective measure of pubertal timing without having to rely on physical examination or self-report. We describe the derivation of aPHV estimates in Avon Longitudinal Study of Parents and Children (ALSPAC) offspring, using Superimposition by Translation And Rotation (SITAR) mixed effects growth curve analysis. ALSPAC is a rich source of phenotypic and genotypic data and given the importance of pubertal timing for later health outcomes, these data offer an opportunity to explore the determinants and consequences of aPHV.

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