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[Preprint]. 2023 Mar 27:rs.3.rs-2644466.
doi: 10.21203/rs.3.rs-2644466/v1.

Investigating the Association between Educational Attainment and Allostatic Load with Risk of Cancer Mortality among African American Women

Cynthia Li  1 , Sydney Elizabeth Andrzejak  1 , Samantha R Jones  1 , Brittany Marie Williams  2 , Justin Xavier Moore  1
Affiliations

Investigating the Association between Educational Attainment and Allostatic Load with Risk of Cancer Mortality among African American Women

Cynthia Li et al. Res Sq. .

Update in

Abstract

Background African American (AA) women navigate the world with multiple intersecting marginalized identities. Accordingly, AA women have higher cumulative stress burden or allostatic load (AL) compared to other women. AL correlates with poorer health outcomes and increased risk of cancer death. However, research indicates AA women with a college degree or higher have lower AL than AA women with less than a high school diploma. We examined whether educational attainment differences and AL status in AA women are associated with long-term risk of cancer mortality. Methods We performed a retrospective analysis among 4,677 AA women respondents using National Health and Nutrition Examination Survey (NHANES) data from 1988 through 2010 with follow up data through December 31, 2019. We fit Cox proportional hazards models to estimate adjusted hazard ratios (aHRs) of cancer death between educational attainment/AL (adjusted for age, sociodemographic, and health factors). Results AA women with less than a high school diploma living with high AL had nearly a 3-fold increased risk (unadjusted HR: 2.98; 95%C CI: 1.24â€"7.15) of cancer death compared to AA college graduates living with low AL. However, after adjusting for age, the increased risk of cancer death in those with less than a high school diploma and high AL attenuated (age-adjusted HR: 1.11; 95% CI: .45-2.74). Conclusions Differences in educational attainment and AL in AA women were not associated with increased risk of cancer mortality when adjusted for age. Previous studies have shown that increased allostatic load is associated with increased risk of cancer death. However, for African American women, higher educational attainment does not modify the risk of cancer mortality. The benefits that may come along with higher education such as increased access to medical care and better medical literacy do not change the risk of cancer mortality in AA women.

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Conflict of interest statement

Competing interest: The authors declare no potential conflicts of interest.

Figures

Figure 1
Figure 1
Flowchart of exclusion criteria and final study population of NHANES participants.
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