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Predictors of maintaining cognitive function in older adults: the Health ABC study
K Yaffe1, A J Fiocco, K Lindquist
1Department of Psychiatry, School of Medicine, University of California, San Francisco, 4150 Clement St., San Francisco, CA 94117, USA.
Neurology
|June 10, 2009
Summary
Maintaining cognitive function in advanced age is linked to factors like higher education, exercise, and not smoking. These modifiable factors offer potential for successful cognitive aging prevention programs.
Area of Science:
- Gerontology
- Neuroscience
- Public Health
Background:
- Identified risk factors for cognitive decline are known, but predictors of cognitive maintenance in older adults are less understood.
- Focus on factors promoting cognitive resilience in aging populations is crucial for public health.
Purpose of the Study:
- To identify baseline characteristics associated with the maintenance of cognitive function in a diverse cohort of older adults.
- To differentiate factors predicting cognitive maintenance versus minor cognitive decline.
Main Methods:
- Prospective study of 2,509 elders, assessing cognitive function using the Modified Mini-Mental State Examination over 8 years.
- Random effects models categorized participants into cognitive maintainers, minor decliners, or major decliners.
- Logistic regression identified predictors of being a maintainer versus a minor decliner.
Main Results:
- Over 8 years, 30% maintained cognitive function, 53% showed minor decline, and 16% experienced major decline.
- Key predictors for maintaining cognitive function included older age, white race, higher education, higher literacy, regular exercise, and non-smoking status.
- Specific odds ratios and confidence intervals were reported for these associations.
Conclusions:
- Cognitively maintaining elders possess a distinct profile compared to those with minor decline.
- Modifiable factors identified offer targets for prevention programs aimed at promoting successful cognitive aging.
- Understanding factors for maintenance versus decline may inform distinct prevention and treatment strategies.
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