Why the study?
It was unknown whether life course socioeconomic position was associated with the incidence of type 2 diabetes among African Americans.
Does life course socioeconomic position affect the incidence of type 2 diabetes in African American adults?
Does life course socioeconomic position affect the incidence of type 2 diabetes in African American adults?
Childhood socioeconomic position and upward social mobility may influence the incidence of type 2 diabetes in African American women, highlighting sex-specific social determinants of metabolic health.
Associations of life course SEP with t2DM incidence appear sex-specific; leaves open causal pathways and intervention targets.
Objective: We examined whether life course socioeconomic position (SEP) was associated with incidence of type 2 diabetes (t2DM) among African Americans. Design: Secondary analysis of data from the Jackson Heart Study, 2000-04 to 2012, using Cox proportional hazard regression to estimate hazard ratios (HR) with 95% CI for t2DM incidence by measures of life course SEP. Participants: Sample of 4,012 nondiabetic adults aged 25-84 years at baseline. Outcome Measure: Incident t2DM identified by self-report, hemoglobin A1c ≥6.5%, fasting plasma glucose ≥126 mg/dL, or use of diabetes medication. Results: During 7.9 years of follow-up, 486 participants developed t2DM (incidence rate 15.2/1000 person-years, 95% CI: 13.9-16.6). Among women, but not men, childhood SEP was inversely associated with t2DM incidence (HR=.97, 95% CI: .94-.99) but was no longer associated with adjustment for adult SEP or t2DM risk factors. Upward SEP mobility increased the hazard for t2DM incidence (adjusted HR=1.52, 95% CI: 1.05-2.21) among women only. Life course allostatic load (AL) did not explain the SEP-t2DM association in either sex. Conclusions: Childhood SEP and upward social mobility may influence t2DM incidence in African American women but not in men.
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Beckles et al. (2019) studied this question.
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