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. 2021 Feb 2;18(3):1358.
doi: 10.3390/ijerph18031358.

The Relationship of Race, Psychosocial Stress and Resiliency Indicators to Neurocognitive Impairment among Older Americans Enrolled in the Health and Retirement Survey: A Cross-Sectional Study

Allan K Nkwata  1 , Ming Zhang  1 , Xiao Song  1 , Bruno Giordani  2 , Amara E Ezeamama  3
Affiliations

The Relationship of Race, Psychosocial Stress and Resiliency Indicators to Neurocognitive Impairment among Older Americans Enrolled in the Health and Retirement Survey: A Cross-Sectional Study

Allan K Nkwata et al. Int J Environ Res Public Health. .

Abstract

Background: Race/ethnicity, toxic stress (TS), resilience-promoting factors (RPFs), and their interactions were investigated in relationship to neurocognitive impairment (NI) in a nationally representative sample of adult Americans ≥50 years enrolled in the Health and Retirement Study (HRS) between 2012 and 2014.

Methods: NI was defined as physician diagnosis of Alzheimer's disease/dementia or HRS total cognition score ≤ 10. Race/ethnicity (i.e., African American, White, or Other), TS (i.e., everyday discrimination and chronic stressors), and mastery (as indicator of RPF) were self-reported. Multivariable logistic regression models estimated race-, TS-, RPF-associated odds ratios (ORs), and 95% confidence intervals (CI) for NI adjusting for socio-demographic confounders.

Results: 6317 respondents interviewed between the years 2012 and 2014, age range 55-104 years old, 83% White, 13% Black and 4% Other race were included in the study. Chronic stress (OR = 1.88, 95% CI: 1.42-2.48), discrimination (OR = 3.31, 95% CI: 2.12-5.19) and low mastery (OR = 1.85, 95% CI: 1.38-2.48) were each associated with higher NI risk while low mastery was associated with higher NI risk in discrimination and race/ethnicity dependent manner. Specifically, low mastery-associated risk for NI was evident among adults that denied experiencing discrimination (OR = 2.01, 95% CI: 1.51-2.68), but absent among those that experienced discrimination (OR = 0.72, 95% CI: 0.32-1.62). Further, AA race was associated with NI risk but only among adults with high mastery (OR = 2.00, 95% CI: 1.20-3.35).

Conclusions: Discrimination, chronic stress, and low mastery were associated with worse cognition. Persisting cognitive disadvantage for AA vs. White/Other race only among high mastery adults suggests that adverse social experiences may counteract mastery-associated cognitive benefits among AA population. TS reduction through policies that promote equal treatment by race/ethnicity in social life, health, justice, and economic systems may promote successful cognitive aging.

Keywords: everyday discrimination; minority race; neurocognitive impairment; older Americans; resilience promoting factors; toxic stress.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Race and discrimination-related differences in risk of Neurocognitive impairment within strata of mastery.
Figure 2
Figure 2
Heterogeneity in age and chronic stress-related associations for risk of neurocognitive impairment.
Figure 3
Figure 3
Low mastery associated risk of Neurocognitive impairment varies within strata of race, and social experience of discrimination.
See this image and copyright information in PMC

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