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A Method for Investigating Age-related Differences in the Functional Connectivity of Cognitive Control Networks Associated with Dimensional Change Card Sort Performance
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Ethnic differences in cognitive function over time.

Meredith C Masel1, M Kristen Peek

  • 1School of Health Professions, University of Texas Medical Branch at Galveston, Galveston, TX 77555-1137, USA. mcmasel@utmb.edu

Annals of Epidemiology
|August 7, 2009
PubMed
Summary
This summary is machine-generated.

Ethnic disparities in cognitive function scores exist in older adults, but rates of cognitive decline over time did not significantly differ by ethnicity or education level in this study.

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Area of Science:

  • Gerontology
  • Cognitive Neuroscience
  • Public Health

Background:

  • Minority status in older age is linked to lower cognitive function scores, independent of education.
  • Previous studies show mixed results regarding ethnic differences in cognitive decline rates.

Purpose of the Study:

  • To investigate if health disparities in cognitive function scores extend to differing rates of cognitive decline.
  • To examine ethnic differences in cognitive decline among white, black, and Hispanic adults.

Main Methods:

  • Analyzed 9-year cognitive change (memory and mental status) in a national sample (Health and Retirement Study).
  • Utilized multivariable mixed modeling to assess rates of change over time (1996-2004).
  • Controlled for demographic, social, and health variables.

Main Results:

  • Ethnicity was associated with cognitive function scores across study waves.
  • Ethnicity did not significantly impact the rate of cognitive decline.
  • Education level was associated with cognitive function scores but not with decline rates.

Conclusions:

  • Health disparities in cognitive function are present in late middle age.
  • Ethnic differences in cognitive decline rates are not consistently observed in this population.