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Updated: Jun 8, 2026

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
Published on: January 11, 2020
Predictive utility of type and duration of symptoms at initial presentation in patients with mild cognitive
Deidre J Devier1, Nicole Villemarette-Pittman, Patrick Brown
1Department of Neurology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA. ddevie @ lsuhsc.edu
Background/Aims:
To assess (1) the duration and symptoms present in participants with mild cognitive impairment (MCI) and (2) the impact of these variables on predicting conversion to Alzheimer's disease (AD).
Methods:
Participants with MCI (n = 148) were assessed and followed systematically.
Results:
Decline in memory was reported as the first symptom in 118 of the cases. Converters had more symptoms (e.g. language decline, depression), and the combination of decline in memory and in performance of high-order social/cognitive activities as well as disorientation more often than nonconverters (p = 0.036). In an age-stratified Cox model, predictors of conversion to AD were shorter time since onset of memory decline and lower baseline MMSE score.
Conclusions:
Recent onset of memory decline with older age, decreased MMSE score, change in performance and disorientation indicate a greater likelihood of short-term conversion to AD.
Insights
Early memory decline and disorientation in mild cognitive impairment (MCI) predict faster conversion to Alzheimer's disease (AD). Older age and lower MMSE scores further increase this risk.
Area of Science:
- Neurology
- Neuroscience
- Gerontology
Background:
- Mild cognitive impairment (MCI) is a transitional stage between normal aging and Alzheimer's disease (AD).
- Understanding predictors of MCI conversion to AD is crucial for early intervention.
Purpose of the Study:
- To determine the duration and symptoms associated with MCI.
- To evaluate how these factors predict conversion to Alzheimer's disease (AD).
Main Methods:
- Systematic assessment and follow-up of 148 participants diagnosed with MCI.
- Utilized age-stratified Cox models to identify predictors of conversion.
Main Results:
- Memory decline was the initial symptom in 118 MCI cases.
- Individuals converting to AD exhibited more symptoms (e.g., language, depression) and disorientation.
- Shorter time since memory decline onset and lower baseline Mini-Mental State Examination (MMSE) scores predicted conversion.
Conclusions:
- Recent memory decline, older age, lower MMSE scores, performance changes, and disorientation are indicators of short-term AD conversion risk.
- These findings aid in identifying MCI patients at higher risk for progression to Alzheimer's disease.
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