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Socioeconomic Inequalities in Body Mass Index across Adulthood: Coordinated Analyses of Individual Participant Data from Three British Birth Cohort Studies Initiated in 1946, 1958 and 1970

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  • David Bann
  • William Johnson
  • Leah Li
  • Diana Kuh
  • Rebecca Hardy

Abstract

Background: High body mass index (BMI) is an important contributor to the global burden of ill-health and health inequality. Lower socioeconomic position (SEP) in both childhood and adulthood is associated with higher adult BMI, but how these associations have changed across time is poorly understood. We used longitudinal data to examine how childhood and adult SEP relates to BMI across adulthood in three national British birth cohorts. Methods and Findings: The sample comprised up to 22,810 participants with 77,115 BMI observations in the 1946 MRC National Survey of Health and Development (ages 20 to 60–64), the 1958 National Child Development Study (ages 23 to 50), and the 1970 British Cohort Study (ages 26 to 42). Harmonized social class-based SEP data (Registrar General’s Social Class) was ascertained in childhood (father’s class at 10/11 y) and adulthood (42/43 years), and BMI repeatedly across adulthood, spanning 1966 to 2012. Associations between SEP and BMI were examined using linear regression and multilevel models. Conclusions: Given these persisting inequalities and their public health implications, new and effective policies to reduce inequalities in adult BMI that tackle inequality with respect to both childhood and adult SEP are urgently required In a harmonized analysis of socioeconomic and anthropometric data from three cohorts, David Bann and colleagues trace the relationship between socioeconomic status and BMI over time in the UK.Why Was This Study Done?: What Did the Researchers Do and Find?: What Do These Findings Mean?:

Suggested Citation

  • David Bann & William Johnson & Leah Li & Diana Kuh & Rebecca Hardy, 2017. "Socioeconomic Inequalities in Body Mass Index across Adulthood: Coordinated Analyses of Individual Participant Data from Three British Birth Cohort Studies Initiated in 1946, 1958 and 1970," PLOS Medicine, Public Library of Science, vol. 14(1), pages 1-20, January.
  • Handle: RePEc:plo:pmed00:1002214
    DOI: 10.1371/journal.pmed.1002214
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    Cited by:

    1. Dawid Gondek & Ke Ning & George B Ploubidis & Bilal Nasim & Alissa Goodman, 2018. "The impact of health on economic and social outcomes in the United Kingdom: A scoping literature review," PLOS ONE, Public Library of Science, vol. 13(12), pages 1-21, December.
    2. Charlotte S C Woolley & Ian G Handel & B Mark Bronsvoort & Jeffrey J Schoenebeck & Dylan N Clements, 2020. "Is it time to stop sweeping data cleaning under the carpet? A novel algorithm for outlier management in growth data," PLOS ONE, Public Library of Science, vol. 15(1), pages 1-21, January.

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