Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Ann Epidemiol. 2005 Sep;15(8):564-71.

Socioeconomic differences in cognitive decline and the role of biomedical factors.

Author information

  • 1Department of Health Care Studies, Section Medical Sociology, Universiteit Maastricht, Maastricht, The Netherlands. a.koster@zw.unimaas.nl

Abstract

PURPOSE:

This study examines the association between socioeconomic status and cognitive decline in a community-based cohort of well-functioning older adults and seeks to determine whether this link could be explained by biomedical factors.

METHODS:

Data are from 2574 men and women aged 70 to 79 years from Pittsburgh, PA, and Memphis, TN, participating in the Health, Aging and Body Composition study (Health ABC). Three indicators of socioeconomic status were used: education, income, and ownership of financial assets. Cognitive decline over 4 years was defined as a decrease of five points or more in the Modified Mini-Mental State Examination (3MS) score. Biomedical factors measured at baseline, included heart disease, cerebrovascular disease, diabetes, hypertension, poor pulmonary function, and high serum levels of inflammatory markers.

RESULTS:

Adjusted odds ratios were significantly higher in those with low education, low income, and few assets. Odds ratios ranged from 1.51 to 2.16 in the lowest socioeconomic groups. Additional adjustment for biomedical factors reduced the odds ratios of cognitive decline by an average of 2% for education, 5% for income, and 8% for the number of assets.

CONCLUSIONS:

Low socioeconomic status predicts a decline in cognitive function in older adults and this relationship is not mediated by biomedical factors.

PMID:
15922627
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk