Comparison of Approaches for Equating Different Versions of the MMSE Administered in 22 Studies.

Comparison of Approaches for Equating Different Versions of the MMSE Administered in 22 Studies. Am J Epidemiol. 2019 Oct 10;: Authors: Gross AL, Kueider-Paisley AM, Sullivan C, Schretlen D, International Neuropsychological Normative Database Initiative Abstract The Mini-Mental State Exam (MMSE) is one of the most widely used cognitive screening tests in the world. However, its administration and content differs by country and region, precluding direct comparison of scores across versions. Our objective was to compare two methods of deriving comparable scores across MMSE versions. The International Neuropsychological Normative Database Initiative collected MMSE scores on over 120,000 individuals from 47 studies in 35 countries. We used MMSE data from N=80,559 adults aged 41-99 years from 22 studies that provided item-level response data. We first equated 14-point, 15-point, 18-point, 19-point, and 23-point versions of the MMSE to the original 30-point version using coarse equipercentile equating methods that preserved differences across continent, age, and years of education. We then derived more precise item response theory based scores using item-level responses to MMSE component items. We compared the two score equating approaches using correlation and Bland-Altman plots. Both test equating approaches were highly correlated with each other (r=0.73) and with raw MMSE point totals. Bland-Altman plots revealed minimal evidence of sys...
Source: Am J Epidemiol - Category: Epidemiology Authors: Tags: Am J Epidemiol Source Type: research