|Title||Racial/Ethnic Differences in Trajectories of Cognitive Function in Older Adults.|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||Vasquez, E, Botoseneanu, A, Bennett, JM, Shaw, BA|
|Journal||J Aging Health|
|Date Published||2016 12|
|Keywords||African Continental Ancestry Group, Aged, Aged, 80 and over, Cognition, Cognition Disorders, European Continental Ancestry Group, Female, Health Behavior, Hispanic Americans, Humans, Male|
OBJECTIVE: The objective of this study is to (a) examine racial/ethnic differences in trajectories of cognitive function and (b) evaluate the role of education and health behaviors (physical activity [PA] and smoking) as mediators of racial/ethnic differences in the rate of decline in cognitive function in older adults.
METHOD: Data for this study came from the Health and Retirement Study ( n = 3,424). Hierarchical linear models were used to define the trajectory of cognitive function between 2002 and 2008. Participants were classified based on PA as non-vigorously active, intermittent vigorously active, and consistently vigorously active.
RESULTS: After adding education, the Hispanic's and Black's disparities in cognitive performance were slightly attenuated (Hispanics, β = -1.049, p < .001; Blacks, β = -3.397, p < .001) but were still different from Whites. Smoking was not associated with the cognition intercept or rate of decline.
DISCUSSION: We found education had a partial mediating effect on racial differences in levels of cognition but not on the rate of change over time.
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|Alternate Journal||J Aging Health|
|Grant List||R01 AG031109 / AG / NIA NIH HHS / United States|