Résumé
Background: Social inequalities in the prevalence of childhood overweight and obesity are well-established, but less is known about when the social gradient first emerges and how it evolves across childhood and adolescence. Objective: This study examines maternal education differentials in children's body mass trajectories in infancy, childhood and adolescence using data from four contemporary European child cohorts. Methods: Prospective data on children's body mass index (BMI) were obtained from four cohort studies—Generation XXI (G21—Portugal), Growing Up in Ireland (GUI) infant and child cohorts, and the Millennium Cohort Study (MCS—UK)—involving a total sample of 41,399 children and 120,140 observations. Children's BMI trajectories were modelled by maternal education level using mixed-effect models. Results: Maternal educational inequalities in children's BMI were evident as early as three years of age. Children from lower maternal educational backgrounds were characterised by accelerated BMI growth, and the extent of the disparity was such that boys from primary-educated backgrounds measured 0.42 kg/m2 (95% CI 0.24, 0.60) heavier at 7 years of age in G21, 0.90 kg/m2(95% CI 0.60, 1.19) heavier at 13 years of age in GUI and 0.75 kg/m2 (95% CI 0.52, 0.97) heavier in MCS at 14 years of age. The corresponding figures for girls were 0.71 kg/m2 (95% CI 0.50, 0.91), 1.31 kg/m2 (95% CI 1.00, 1.62) and 0.76 kg/m2 (95% CI 0.53, 1.00) in G21, GUI and MCS, respectively. Conclusions: Maternal education is a strong predictor of BMI across European nations. Socio-economic differentials emerge early and widen across childhood, highlighting the need for early intervention.
Langue d'origine | English |
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Pages (de-à) | 226-237 |
Nombre de pages | 12 |
Journal | Paediatric and Perinatal Epidemiology |
Volume | 33 |
Numéro de publication | 3 |
DOI | |
Statut de publication | Published - mai 2019 |
Financement
Cathal McCrory is supported by the Health Research Board (HRB) of Ireland under an Emerging Investigator Award (EIA‐2017‐012). This work was also supported by the Lifepath grant to Paolo Vineis at Imperial College London (European Commission H2020, Grant number: 633666). Funding information Cathal McCrory is supported by the Health Research Board (HRB) of Ireland under an Emerging Investigator Award (EIA-2017-012). This work was also supported by the Lifepath grant to Paolo Vineis at Imperial College London (European Commission H2020, Grant number: 633666). Growing Up in Ireland (GUI) has been funded by the Government of Ireland through the Department of Children and Youth Affairs (DCYA) in association with the central statistics office and the Department of Social Protection (DSP). These data have been collected in accordance with the Statistics Act, 1993. The DCYA, CSO and DSP take no responsibility for the views expressed or the outputs generated from the research undertaken. The project has been designed and implemented by the joint ESRI-TCD Growing Up in Ireland Study Team. The GUI data sets are freely available to researchers via the Irish Social Sciences Data Archive (https://www.ucd.ie/issda). The Millennium Cohort Study is conducted by the Centre for Longitudinal Studies (CLS) at the Institute of Education, University of London. Data from the MCS surveys are held and distributed by the UK Data Service (http://ukdataservice.ac.uk) and are freely available to researchers under standard conditions. Neither CLS nor the UK Data Service bear any responsibility for the analysis or interpretation of these data. The authors also gratefully acknowledge the families enrolled in Generation XXI, Growing Up in Ireland and the Millennium Cohort Study, as well as the members of the respective research teams, hospitals and staff (G21) responsible for the collection and provision of data used in this paper. Growing Up in Ireland (GUI) has been funded by the Government of Ireland through the Department of Children and Youth Affairs (DCYA) in association with the central statistics office and the Department of Social Protection (DSP). These data have been col‐ lected in accordance with the Statistics Act, 1993. The DCYA, CSO and DSP take no responsibility for the views expressed or the out‐ puts generated from the research undertaken.
Bailleurs de fonds | Numéro du bailleur de fonds |
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Department of Social Protection | |
UK Data Service | |
Health Research Board | EIA‐2017‐012 |
Deparment of Children and Youth Affairs, Ireland | |
Horizon 2020 Framework Programme | |
European Commission | 633666 |
Institute of Education, University of London |
ASJC Scopus Subject Areas
- Epidemiology
- Pediatrics, Perinatology, and Child Health