Social Inequalities in Height: Persisting Differences Today Depend upon Height of the Parents

Bruna Galobardes, Valerie A McCormack, Peter McCarron, Laura D Howe, John Lynch, Debbie A Lawlor and George Davey Smith

PLOS ONE, 2012, vol. 7, issue 1, 1-8

Abstract: Background: Substantial increases in height have occurred concurrently with economic development in most populations during the last century. In high-income countries, environmental exposures that can limit genetic growth potential appear to have lessened, and variation in height by socioeconomic position may have diminished. The objective of this study is to investigate inequalities in height in a cohort of children born in the early 1990s in England, and to evaluate which factors might explain any identified inequalities. Methods and Findings: 12,830 children from The Avon Longitudinal Study of Parents and Children (ALSPAC), a population based cohort from birth to about 11.5 years of age, were used in this analysis. Gender- and age-specific z-scores of height at different ages were used as outcome variables. Multilevel models were used to take into account the repeated measures of height and to analyze gender- and age-specific relative changes in height from birth to 11.5 years. Maternal education was the main exposure variable used to examine socioeconomic inequalities. The roles of parental and family characteristics in explaining any observed differences between maternal education and child height were investigated. Conclusions: In a cohort of children born in the 1990s, mothers with higher education gave birth to taller boys and girls. Although height differences were small they persisted throughout childhood. Maternal and paternal height fully explained these differences.

Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0029118

DOI: 10.1371/journal.pone.0029118

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