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Updated: Jun 19, 2026

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
Published on: January 11, 2020
Potentially inappropriate medication use in older adults with mild cognitive impairment
Andrea L Weston1, Andrea M Weinstein, Cynthia Barton
1Department of Geriatric Psychiatry, San Francisco Veterans Affairs Medical Center, California, USA. andrea.weston@ucsf.edu
Background:
Patients with mild cognitive impairment (MCI) may be especially vulnerable to the side effects of potentially inappropriate medications (PIMs), especially those that impair cognition.
Methods:
We conducted a cross-sectional study to determine the prevalence of PIM use among 689 patients with MCI. We used the 2003 Beers Criteria for cognitive impairment to identify PIMs. We then determined if certain patients were more likely to use PIMs.
Results:
There were 143 (20.8%) patients with MCI taking a PIM: 108 (15.7%) patients were taking one PIM and 35 (5.1%) patients were taking two or more PIMs. The most common PIMs were anticholinergics (35.7%) and benzodiazepines (31.5%). Patients were more likely to be taking PIMs if they were women and were taking a greater number of medications and less likely if they had a history of myocardial infarction.
Conclusions:
Patients with MCI are frequently taking PIMs that may negatively affect cognition. Future research is needed to assess whether cognitive impairment symptoms are improved if PIM use is reduced.
Insights
Potentially inappropriate medications (PIMs) are frequently used by patients with mild cognitive impairment (MCI). Reducing PIM use may improve cognitive symptoms in this vulnerable population.
Area of Science:
- Geriatric Pharmacology
- Neuroscience
- Clinical Pharmacy
Background:
- Mild cognitive impairment (MCI) increases vulnerability to medication side effects.
- Cognitive-impairing medications pose a significant risk to MCI patients.
Purpose of the Study:
- Determine the prevalence of potentially inappropriate medication (PIM) use in patients with mild cognitive impairment (MCI).
- Identify patient characteristics associated with PIM use in MCI.
Main Methods:
- Cross-sectional study of 689 patients with MCI.
- Utilized the 2003 Beers Criteria to identify PIMs.
- Analyzed demographic and clinical factors associated with PIM use.
Main Results:
- 20.8% of MCI patients used at least one PIM.
- Anticholinergics (35.7%) and benzodiazepines (31.5%) were the most common PIMs.
- PIM use was higher in women and those on multiple medications; lower in patients with myocardial infarction history.
Conclusions:
- MCI patients frequently use PIMs that can impair cognition.
- Further research is warranted to evaluate the impact of PIM reduction on cognitive function in MCI.
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