Moving Towards a More Comprehensive Investigation of Racial/Ethnic Differences in Cognitive Disability Among US Adults

Adverse childhood experiences and cognitive disability in the 2019 United States behavioral risk factor surveillance system

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Adverse childhood experiences are positively associated with cognitive disability.

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The associations varied significantly by race and ethnicity.

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Larger associations were observed among Hispanic respondents.

A growing number of studies have found associations between adverse childhood experiences (ACEs) and adult well-being, with disparities between subpopulations. Limited research exists about the association between ACEs and cognitive disability, and variations by race and ethnicity. This study reports a cross-sectional analysis of 2019 Behavioral Risk Factor Surveillance System (BRFSS) data (n = 93 692) conducted in 2021. Logistic regression models examined the association between ACEs and cognitive disability (as defined by serious difficulty concentrating, remembering or making decisions because of a physical, mental, or emotional condition) and whether the association varied by race and ethnicity, adjusting for demographics, (age, gender, marital status), socioeconomic factors (income and education), and perceived general health. Exposures to 1, 2, 3, and 4 or more ACEs were associated with elevated odds of cognitive disability; the association varied by race and ethnicity (p for interaction less than 0.05). In stratified analyses, ACEs were positively associated with cognitive disability among the American Indian/Alaskan Native group, though significant only among those reporting 4 ACEs or more (OR: 2.89; 95% CI 1.25, 6.66). A dose response was observed for Black, White and Hispanic groups though the association was larger among Hispanic respondents. The elevated odds of cognitive disability associated with ACEs warrant additional research to understand mechanisms underlying this relationship across racial and ethnic groups. Additionally, interventions to prevent cognitive disability may benefit from considering ACEs across all populations, particularly among those with highest prevalence.

Balance and cognitive decline in older adults in the cardiovascular health study

BACKGROUND

Previous studies have demonstrated an association between gait speed and cognitive function. However, the relationship between balance and cognition remains less well explored. This study examined the cross-sectional and longitudinal relationship of balance and cognitive decline in older adults.

METHODS

A cohort of 4,811 adults, aged ≥65 years, participating in the Cardiovascular Health Study was followed for 6 years. Modified Mini-Mental State Examination (3MSE) and Digit Symbol Substitution Test (DSST) were used to measure cognition. Tandem balance measures were used to evaluate balance. Regression models were adjusted for demographics, behavioural and disease factors.

RESULTS

Worse balance was independently associated with worse cognition in cross-sectional analysis. Longitudinally, participants aged ≥76 years with poorer balance had a faster rate of decline after adjustment for co-variates: -0.97 points faster decline in 3MSE per year (95% confidence interval (CI): -1.32, -0.63) compared to the participants with good balance. There was no association of balance and change in 3MSE among adults aged <76 years (P value for balance and age interaction < 0.0001). DSST scores reflected -0.21 (95% CI: -0.37, -0.05) points greater decline when adjusted for co-variates. In Cox proportional hazard models, participants with worse balance had a higher risk of being cognitively impaired over the 6 years of follow-up visits (adjusted HR:1.72, 95% CI: 1.30, 2.29).

CONCLUSIONS

Future studies should evaluate standing balance as a potential screening technique to identify individuals at risk of cognitive decline. Furthermore, a better understanding of the pathophysiological link between balance and cognition may inform strategies to prevent cognitive decline.

Later-Life Trajectories of Cognitive Functioning among Married and Widowed Older Men and Women of Mexican Origin

Research on marital status-gender differences in later-life trajectories of cognitive functioning is scarce. Drawing on seven waves of data from the Hispanic Established Population for the Epidemiologic Study of the Elderly, this research uses growth curve models to examine later-life dynamics of cognitive functioning among married and widowed older men and women of Mexican descent (aged 65+; N = 3329). The findings demonstrate that the widowed, regardless of gender, had lower initial levels of cognition but a less steep cognitive decline across waves, compared to married men. Age and socioeconomic resources accounted for these marital status differences in levels and rates of change in cognitive functioning completely among widowed men and partially among widowed women. Moreover, net of all the factors, married women had a slower cognitive decline than married men. This study also shows that health and social integration might shape cognitive functioning among older adults of Mexican descent.