Dement Neurocogn Disord.  2018 Dec;17(4):148-155. 10.12779/dnd.2018.17.4.148.

Validation of MoCA-MMSE Conversion Scales in Korean Patients with Cognitive Impairments

• Jung YI
• Jeong EH
• Lee H
• Seo J
• Yu HJ
• Hong JY
• Sunwoo MK

• KMID: 2442785
• DOI: http://doi.org/10.12779/dnd.2018.17.4.148

Abstract

BACKGROUND AND PURPOSE
Two conversion scales between the Mini-Mental State Examination (MMSE) and the Montreal Cognitive Assessment (MoCA) have been validated for Korean patients with Parkinson's disease. The aim of the present study was to validate these conversion scales for all patients with cognitive impairments regardless of dementia subtype.
METHODS
Medical records of 323 subjects who completed both MMSE and MoCA on the same day were retrospectively reviewed. Mean, median, and root mean squared error (RMSE) of the difference between true and equivalent MMSE scores were calculated. Intraclass correlation coefficients (ICCs) between true and equivalent MMSE scores were also calculated. The validity of MoCA-MMSE conversion scales was evaluated according to educational level (low educated: ≤6 years; high educated: ≥7 years) and subtypes of cognitive impairment.
RESULTS
The difference between true and equivalent MMSE scores had a median value of 0, a mean value of 0.19 according to the van Steenoven scale, a mean value of 0.57 according to the Lawton scale, RMSE value of 2.2 according to the van Steenoven scale, and RMSE value of 0.42 according to the Lawton scale. Additionally, ICCs between true and equivalent MMSE scores were 0.92 and 0.90 on van Steenovan and Lawton conversion scales, respectively. These results were maintained in subgroup analyses.
CONCLUSIONS
Findings of the present study suggest that both van Steenovan and Lawton MoCA-MMSE conversion scales are applicable to transforming MoCA scores into MMSE scores in patients with cognitive impairments regardless of dementia subtype or educational level.

Keyword

Mini Mental State Examination; Montreal Cognitive Assessment; Cognitive Impairments; Dementia

MeSH Terms

Cognition Disorders*
Dementia
Humans
Medical Records
Methylenebis(chloroaniline)
Parkinson Disease
Retrospective Studies
Weights and Measures*
Methylenebis(chloroaniline)

Figure

• 

  Fig. 1 Scatterplots of MMSE and MoCA scores in all patients (A), low educated group (B), and high educated group (C). MMSE: Mini-Mental State Examination, MoCA: Montreal Cognitive Assessment.

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