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A longitudinal study of cognitive function in elderly persons with subjective memory complaints
C Flicker1, S H Ferris, B Reisberg
1Department of Psychiatry, New York University Medical Center, NY 10016.
Journal of the American Geriatrics Society
|October 1, 1993
Summary
Healthy older adults with memory complaints but no diagnosed cognitive impairment show minimal cognitive decline over 3-4 years. Most cognitive functions remained stable, indicating low risk for rapid deterioration.
Area of Science:
- Gerontology
- Neuropsychology
- Cognitive Aging
Background:
- Subjective memory loss is common in elderly individuals.
- Distinguishing normal aging from early dementia is crucial for timely intervention.
- Longitudinal data on cognitive changes in those with subjective memory complaints are limited.
Purpose of the Study:
- To evaluate cognitive function changes in elderly individuals reporting memory loss.
- To assess the risk of cognitive deterioration over a 3+ year period.
- To identify predictors of cognitive decline in this population.
Main Methods:
- Prospective cohort study design.
- Recruited 59 healthy elderly participants (mean age 68.7) with memory complaints.
- Administered a comprehensive neuropsychological test battery at baseline and follow-up (average 3.4 years).
Main Results:
- 91.5% of participants completed follow-up.
- Two cognitive tests showed significant improvement, two showed significant decline.
- Eight cognitive tests remained unaffected over the follow-up interval.
Conclusions:
- Elderly individuals with subjective memory complaints but no clinical cognitive impairment are at low risk for progressive cognitive deterioration.
- Subjective memory loss alone does not predict significant cognitive decline within 3-4 years.
- Clinical evaluation is key in assessing the risk of cognitive decline in older adults.