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Lebedeva E, Huang M, Koski L. Comparison of Alternate and Original Items on the Montreal Cognitive Assessment. Can Geriatr J. 2016;19(1):15-8doi: 10.5770/cgj.19.216.
Lebedeva, E., Huang, M., & Koski, L. (2016). Comparison of Alternate and Original Items on the Montreal Cognitive Assessment. Canadian geriatrics journal : CGJ, 19(1), 15-8. https://doi.org/10.5770/cgj.19.216
Lebedeva, Elena, et al. "Comparison of Alternate and Original Items on the Montreal Cognitive Assessment." Canadian geriatrics journal : CGJ vol. 19,1 (2016): 15-8. doi: https://doi.org/10.5770/cgj.19.216
Lebedeva E, Huang M, Koski L. Comparison of Alternate and Original Items on the Montreal Cognitive Assessment. Can Geriatr J. 2016 Mar 31;19(1):15-8. doi: 10.5770/cgj.19.216. eCollection 2016 Mar. PMID: 27076861; PMCID: PMC4815933.
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Can Geriatr J. 2016 Mar 31;19(1):15-8. doi: 10.5770/cgj.19.216. eCollection 2016 Mar.

Comparison of Alternate and Original Items on the Montreal Cognitive Assessment.

Canadian geriatrics journal : CGJ

Elena Lebedeva, Mei Huang, Lisa Koski

Affiliations

  1. The Research Institute of the McGill University Health Centre, Montreal, QC;
  2. The Research Institute of the McGill University Health Centre, Montreal, QC;; Department of Neurology & Neurosurgery, McGill University Health Centre, Montreal, QC.

PMID: 27076861 PMCID: PMC4815933 DOI: 10.5770/cgj.19.216

Abstract

BACKGROUND: The Montreal Cognitive Assessment (MoCA) is a screening tool for mild cognitive impairment (MCI) in elderly individuals. We hypothesized that measurement error when using the new alternate MoCA versions to monitor change over time could be related to the use of items that are not of comparable difficulty to their corresponding originals of similar content. The objective of this study was to compare the difficulty of the alternate MoCA items to the original ones.

METHODS: Five selected items from alternate versions of the MoCA were included with items from the original MoCA administered adaptively to geriatric outpatients (N = 78). Rasch analysis was used to estimate the difficulty level of the items.

RESULTS: None of the five items from the alternate versions matched the difficulty level of their corresponding original items.

CONCLUSIONS: This study demonstrates the potential benefits of a Rasch analysis-based approach for selecting items during the process of development of parallel forms. The results suggest that better match of the items from different MoCA forms by their difficulty would result in higher sensitivity to changes in cognitive function over time.

Keywords: MoCA; alternate forms; cognition; cognitive impairment; geriatrics

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