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  11. Joint Effects Of Environmental And Neighborhood Socioeconomic Factors On Cognitive Function In The Heinz Nixdorf Recall Study

Joint effects of environmental and neighborhood socioeconomic factors on cognitive function in the Heinz Nixdorf Recall Study

Katherine Ogurtsova1, Grace M Christensen2, Vanessa J Soppa1

  • 1Institute of Occupational, Social and Environmental Medicine, Center for Health and Society, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, Germany.

Environmental Research
|May 14, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

Neighborhood environmental and socioeconomic disadvantages, including air pollution and traffic noise, are linked to poorer cognitive function in older adults. Addressing these combined factors may improve cognitive health.

Area of Science:

  • Environmental epidemiology
  • Gerontology
Keywords:
Air pollutionCorrelated exposureNeighborhood socioeconomic factorsNeighborhood socioeconomic position

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  • Public health

    • Background:

    • Modifiable environmental and social factors are increasingly recognized for their influence on cognitive health in aging populations.
    • Understanding the interplay of neighborhood characteristics is crucial for developing targeted interventions.

    Purpose of the Study:

    • To investigate the impact of combined neighborhood environmental and socioeconomic factors on cognitive function in older German adults.
    • Utilize advanced statistical methods to analyze complex exposure patterns.

    Main Methods:

    • The Heinz Nixdorf Recall cohort study included 3748 participants (median age 65).
    • Assessed long-term air pollution (PM2.5, NOx) and road traffic noise exposure.
    • Incorporated neighborhood socioeconomic position (nSEP) data.
    • Employed principal component analysis (PCA) and self-organizing maps (SOM) to analyze joint effects on cognitive scores.

    Main Results:

    • Higher exposure to PM2.5, NOx, and neighborhood disadvantages (e.g., welfare recipients, low living area per resident) were associated with lower global cognitive scores (GCS).
    • PCA identified a principal component correlating with disadvantageous nSEP and environmental exposures, linked to reduced GCS.
    • SOM analysis revealed clusters of low nSEP and high environmental exposure associated with poorer cognitive function.

    Conclusions:

    • Distinct combinations of air pollution, noise, and nSEP disadvantages are associated with poorer cognitive function in older adults.
    • Findings underscore the importance of considering combined environmental and social exposures for urban interventions to mitigate cognitive decline.
    Principal component analysis
    Road traffic noise
    Self organized maps