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Socioeconomic differences in children's growth trajectories from infancy to early adulthood: evidence from four European countries

McCrory, C; O'Leary, N; Fraga, S; Ribeiro, AI; Barros, H; Kartiosuo, N; Raitakari, O; ... Layte, R; + view all (2017) Socioeconomic differences in children's growth trajectories from infancy to early adulthood: evidence from four European countries. Journal of Epidemiology and Community Health , 71 (10) pp. 981-989. 10.1136/jech-2016-208556. Green open access

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Abstract

BACKGROUND: Height is regarded as a marker of early-life illness, adversity, nutrition and psychosocial stress, but the extent to which differences in height are determined by early-life socioeconomic circumstances, particularly in contemporary populations, is unclear. This study examined socioeconomic differences in children’s height trajectories from birth through to 21 years of age in four European countries. METHODS: Data were from six prospective cohort studies—Generation XXI, Growing Up in Ireland (infant and child cohorts), Millennium Cohort Study, EPITeen and Cardiovascular Risk in Young Finns Study—comprising a total of 49 492 children with growth measured repeatedly from 1980 to 2014. We modelled differences in children’s growth trajectories over time by maternal educational level using hierarchical models with fixed and random components for each cohort study. RESULTS: Across most cohorts at practically all ages, children from lower educated mothers were shorter on average. The gradient in height was consistently observed at 3 years of age with the difference in expected height between maternal education groups ranging between −0.55 and −1.53 cm for boys and −0.42 to −1.50 cm for girls across the different studies and widening across childhood. The height deficit persists into adolescence and early adulthood. By age 21, boys from primary educated maternal backgrounds lag the tertiary educated by −0.67 cm (Portugal) and −2.15 cm (Finland). The comparable figures for girls were −2.49 cm (Portugal) and −2.93 cm (Finland). CONCLUSIONS: Significant differences in children’s height by maternal education persist in modern child populations in Europe.

Type: Article
Title: Socioeconomic differences in children's growth trajectories from infancy to early adulthood: evidence from four European countries
Open access status: An open access version is available from UCL Discovery
DOI: 10.1136/jech-2016-208556
Publisher version: http://dx.doi.org/10.1136/jech-2016-208556
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: Science & Technology, Life Sciences & Biomedicine, Public, Environmental & Occupational Health, British Birth Cohort, Early-Childhood, Secular Trends, Height, Inequalities, Disparities, Exposure, Health, Income, BMI
UCL classification: UCL > Provost and Vice Provost Offices
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 Pop Health Sciences > Institute of Epidemiology and Health
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute of Epidemiology and Health > Epidemiology and Public Health
URI: http://discovery.ucl.ac.uk/id/eprint/10039801
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