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A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
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Reliability and Validity of the Modified Mini Cog: A Measure for Screening Cognitive Functions in Literates and

Shambhu Prasad Adhikari1, Reetu Mahat2, Sapana Bajagain3

  • 1School of Health and Exercise Sciences, University of British Columbia, Kelowna, BC, Canada.

Journal of Nepal Health Research Council
|November 30, 2025
PubMed
Summary

The modified Mini Cog (MMC) shows excellent reliability and adequate validity for assessing cognitive function in diverse populations. This cognitive screening tool is reliable for both individual raters and across different raters.

Keywords:
Modified mini cog; reliability; sensitivity; specificity; validity.

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Area of Science:

  • Gerontology and Cognitive Neurology
  • Neuroscience and Clinical Psychology

Background:

  • The Mini-Cog cognitive screening tool was adapted for non-literate individuals.
  • The reliability and validity of this modified Mini-Cog (MMC) required investigation.

Purpose of the Study:

  • To assess the intra- and inter-rater reliability of the MMC.
  • To determine the criterion validity, sensitivity, and specificity of the MMC.
  • To evaluate the MMC's ability to differentiate cognitive dysfunction levels.

Main Methods:

  • Methodological, repeated measures design.
  • Participants: Elderly (>60 yrs) without neurological diagnosis and adults (>18 yrs) with neurological diagnosis.
  • Assessments: Two MMC administrations by one rater (1 week apart); one MMC and one Rowland Universal Dementia Assessment Scale (RUDAS) by a second rater.

Main Results:

  • Excellent intra- and inter-rater reliability (ICC: 0.97-0.99).
  • Significant correlation between MMC and RUDAS scores (0.52-0.68).
  • Adequate sensitivity (86%) and specificity (70%) with a cutoff score of ≤3.

Conclusions:

  • The modified Mini-Cog (MMC) demonstrates excellent reliability and adequate validity for cognitive screening.
  • The MMC effectively differentiates between individuals with varying cognitive impairment.
  • Further research is recommended to fully establish the clinical utility of the MMC.