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Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
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Public Health.

Yi Lor1, Michelle J Ko2, Peter James3

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Summary
This summary is machine-generated.

Residential segregation in early adulthood is linked to lower cognitive function later in life. This highlights segregation

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Area of Science:

  • Gerontology
  • Public Health
  • Sociology

Background:

  • Residential segregation in the U.S. is a known driver of health disparities.
  • The impact of residential segregation on dementia risk and resilience is not well understood.
  • Understanding these links is crucial for public health interventions and cognitive aging research.

Purpose of the Study:

  • To investigate the association between residential segregation and cognitive function in older adults.
  • To determine if segregation during midlife or late-life has a differential impact on cognition.
  • To explore the relationship between segregation and specific cognitive domains: executive function, verbal episodic memory, and semantic memory.

Main Methods:

  • Utilized harmonized cohorts (KHANDLE and STAR) comprising diverse older adults.
  • Assessed city-level residential racial segregation using the dissimilarity index for midlife (age 30) and late-life (age 65) timepoints.
  • Analyzed cognitive performance (executive function, verbal episodic memory, semantic memory) using linear regression models, adjusting for covariates.

Main Results:

  • Higher midlife segregation (age 30) was associated with lower semantic memory across all racial/ethnic groups.
  • Midlife Black-White and Hispanic-White segregation were linked to lower verbal episodic memory and executive function, respectively.
  • Higher late-life segregation (age 65) was only associated with lower semantic memory, specifically for the Black-White dissimilarity index.

Conclusions:

  • Midlife residential segregation is significantly associated with poorer late-life semantic memory.
  • Early adulthood (midlife) appears to be a critical period where residential segregation can impact long-term cognitive health.
  • Findings underscore the importance of addressing residential segregation to mitigate cognitive decline and promote healthy aging.