Association between maternal education and blood pressure: mediation evidence through height components in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). (3rd April 2017)

• Record Type: Journal Article
• Authors: Rodríguez López, Santiago; Bensenor, Isabela M.; Giatti, Luana; Molina, Maria del Carmen; Lotufo, Paulo A.
• Is Part Of: Annals of human biology. Volume 44:Number 3(2017)
• Page Start: 243
• Page End: 251
• Publication Date: 2017-04-03
• Subjects: Maternal education -- height components -- blood pressure -- mediation modelling -- transitioning populations; Human biology -- Periodicals; 612
• DOI: 10.1080/03014460.2016.1188983
• Languages: English
• ISSNs: 0301-4460

Abstract

Abstract: Background: Maternal education influences skeletal growth and offspring adult blood pressure (BP). Height components are negatively associated with BP in high-income countries. Aim: To evaluate the association between maternal education and offspring adult systolic and diastolic BP (SBP/DBP), assessing whether different height components might mediate such an association. Subjects and methods: Simple mediation modelling was used to evaluate the maternal education-offspring SBP/DBP association, estimating the contribution of offspring height components, in a cross-sectional sample of 13 571 Brazilians aged 34–75 from the ELSA-Brasil study. Results: After full adjustment for confounders, and compared to participants whose mothers received low education, those whose mothers received high education had, on average, 0.2 mm Hg lower SBP (95% CI = −0.274, −0.132), as result of the link between maternal education and offspring adult height which, in turn, influenced SBP. Thus, 18–26% of the maternal education-SBP association occurred indirectly, through height, trunk and leg length, alternatively. Conclusions: Better maternal education might influence higher leg and trunk lengths in offspring, which, in turn, might contribute to prevent higher BP in adults. The negative height-BP association reported in high-income countries is also present in a middle-income country with more recent economic development.