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Updated: Aug 9, 2026
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A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
Published on: January 11, 2020
Risk factors for transitions from normal to mild cognitive impairment and dementia
R J Kryscio1, F A Schmitt, J C Salazar
1Sanders-Brown Center on Aging, University of Kentucky, KY, USA. kryscio@uky.edu
Neurology
|March 29, 2006
Summary
Age and APOE status are key factors in cognitive decline, influencing transitions from normal cognition to mild cognitive impairment (MCI) and dementia. Education also plays a role in mixed MCI development.
Area of Science:
- Neuroscience
- Gerontology
- Epidemiology
Background:
- Mild cognitive impairment (MCI) is a transitional state between normal cognition and dementia.
- Understanding risk factors for MCI and dementia progression is crucial for early intervention.
Purpose of the Study:
- To identify risk factors for transitions from cognitively normal to mild cognitive impairment (MCI).
- To examine risk factors for transitions from MCI to dementia.
- To consider death as a competing risk in these transitions.
Main Methods:
- Longitudinal study of 554 subjects at the University of Kentucky AD Center.
- Classification of individuals into cognitively normal, amnestic MCI, or mixed MCI states.
- Polytomous logistic models used to analyze transitions, considering age, education, sex, family history, and APOE status.
Main Results:
- Age significantly impacts all transitions, including those to dementia and death.
- Apolipoprotein E (APOE) ε4 allele presence increases risk for transitions to amnestic MCI and dementia.
- Education up to 12 years is associated with transitions into mixed MCI.
- Sex and family history of dementia did not show significant associations with transitions.
Conclusions:
- Age is a primary risk factor for cognitive transitions.
- Risk factors for dementia conversion are also relevant for MCI development.
- APOE ε4 and education level are significant predictors of specific cognitive transitions.
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