Abstract
INTRODUCTION
Depressive symptoms are associated with higher risk of dementia, but how they impact cognition in diverse populations is unclear.
METHODS
Asian, Black, Latino, or White participants (n = 2227) in the Kaiser Healthy Aging and Diverse Life Experiences (age 65+) and the Study of Healthy Aging in African Americans (age 50+) underwent up to three waves of cognitive assessments over 4 years. Multilevel models stratified by race/ethnicity were used to examine whether depressive symptoms were associated with cognition or cognitive decline and whether associations differed by race/ethnicity.
RESULTS
Higher depressive symptoms were associated with lower baseline verbal episodic memory scores (−0.06, 95% CI: −0.12, −0.01; −0.15, 95% CI: −0.25, −0.04), and faster decline annually in semantic memory (−0.04, 95% CI: −0.07, −0.01; −0.10, 95% CI: −0.15, −0.05) for Black and Latino participants. Depressive symptoms were associated with lower baseline but not decline in executive function.
DISCUSSION
Depressive symptoms were associated with worse cognitive outcomes, with some evidence of heterogeneity across racial/ethnic groups.
HIGHLIGHTS
We examined whether baseline depressive symptoms were differentially associated with domain-specific cognition or cognitive decline by race/ethnicity.
Depressive symptoms were associated with worse cognitive scores for all racial/ethnic groups across different domains examined.
Higher depressive symptoms were associated with faster cognitive decline for semantic memory for Black and Latino participants.
The results suggest a particularly harmful association between depressive symptoms and cognition in certain racial/ethnic groups.
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This post is Copyright: Marcia P. Jimenez,
Emma L. Gause,
Kendra D. Sims,
Eleanor Hayes‐Larson,
Emily P. Morris,
Evan Fletcher,
Jennifer Manly,
Paola Gilsanz,
Yenee Soh,
Maria Corrada,
Rachel A. Whitmer,
Medellena Maria Glymour | March 13, 2024