Association between parental socioeconomic status with underweight and obesity in children from two Spanish birth cohorts: a changing relationship.

BMC Public Health · 2015 · PMC4687138 · PMID 26695508

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an increasing trendno p-value reported

A study in the US including data from 1999 to 2010 described an increasing trend in the prevalence of obesity amongst children and adolescents [ 18 ].

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.