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

Childhood Socioeconomic Position and Risk of Cardiovascular Disease in Adulthood: Systematic Review of Evidence From Low- and Middle-Income Countries

INTRODUCTION

Socioeconomic disadvantage in childhood is strongly associated with a higher risk of cardiovascular disease in high-income countries. However, the association in low- and middle-income countries, where childhood poverty remains prevalent, has not been reviewed.

METHODS

The authors systematically searched Embase, MEDLINE, and Global Health databases for articles on the association between childhood socioeconomic position and risk of cardiovascular disease in adulthood in low- and middle-income countries until September 2020. Outcomes included measures of cardiovascular disease, its subclinical markers (e.g., carotid intima-media thickness), and its major risk factors (e.g., hypertension, dyslipidemia, diabetes). Where available, associations were extracted before and after adjustment for socioeconomic position in adulthood. Results were synthesized qualitatively by outcome. The study protocol is registered on PROSPERO (CRD42018086984).

RESULTS

The search returned 3,568 unique abstracts, from which 29 eligible articles from 14 middle-income countries were identified, representing >150,000 participants. The most commonly reported outcomes were cardiovascular risk factors; very few studies reported prevalent measures of cardiovascular disease, and no studies reported cardiovascular disease incidence or mortality. Of the 46 reported associations between childhood socioeconomic position and risk of cardiovascular disease, 8 were inverse, 0 were positive, and 38 showed no clear evidence of association. All articles had high (16/29) or medium (13/29) risk of bias.

CONCLUSIONS

Current evidence from middle-income countries provides little support for an association between childhood socioeconomic position and risk of cardiovascular disease, and evidence from low-income countries is lacking. It would be premature to consider childhood poverty as a target for cardiovascular disease prevention in these settings.

Intergenerational educational mobility, discrimination, and hypertension in adults from Southern Brazil

Systemic arterial hypertension (SAH) or high blood pressure a serious global public health problem marked by social inequalities. There are few studies on SAH in Brazil with a life-course theoretical perspective. The current article aims to analyze the relationship between intergenerational educational mobility (IEM) and SAH in Brazilian adults, verifying the impact of interpersonal and color/"race" discrimination on this relationship. The authors analyzed data from 1,720 adults (20-59 years) and their parents in the EpiFloripa Adult Study. Random-effects multilevel regression models were estimated. The fixed effects showed an inverse relationship between IEM and odds of SAH, with statistical significance for high IEM (paternal model: OR = 0.39, p = 0.006; maternal model: OR = 0.35, p = 0.002; and family model: OR = 0.35, p = 0.001). Meanwhile, interaction models showed that situations of discrimination can act jointly with unfavorable IEM, increasing the odds of SAH, especially among black and brown individuals. The study concludes that persistently high IEM is capable of significantly reducing the odds of SAH, while discrimination can intensify the effect of low education, especially in socially marginalized population segments.