Accuracy of the short-form Montreal Cognitive Assessment: systematic review and validation

McDicken, J. A., Elliott, E., Blayney, G., Makin, S., Ali, M. , Larner, A. J. and Quinn, T. J. (2019) Accuracy of the short-form Montreal Cognitive Assessment: systematic review and validation. International Journal of Geriatric Psychiatry, 34(10), pp. 1515-1525. (doi: 10.1002/gps.5162) (PMID:31243810)

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Abstract

Introduction: Short‐form versions of the Montreal Cognitive Assessment (SF‐MoCA) are increasingly used to screen for dementia in research and practice. We sought to collate evidence on the accuracy of SF‐MoCAs and to externally validate these assessment tools. Methods: We performed systematic literature searching across multidisciplinary electronic literature databases, collating information on the content and accuracy of all published SF‐MoCAs. We then validated all the SF‐MoCAs against clinical diagnosis using independent stroke (n = 787) and memory clinic (n = 410) data sets. Results: We identified 13 different SF‐MoCAs (21 studies, n = 6477 participants) with differing test content and properties. There was a pattern of high sensitivity across the range of SF‐MoCA tests. In the published literature, for detection of post stroke cognitive impairment, median sensitivity across included studies: 0.88 (range: 0.70‐1.00); specificity: 0.70 (0.39‐0.92). In our independent validation using stroke data, median sensitivity: 0.99 (0.80‐1.00); specificity: 0.40 (0.14‐0.87). To detect dementia in older adults, median sensitivity: 0.88 (0.62‐0.98); median specificity: 0.87 (0.07‐0.98) in the literature and median sensitivity: 0.96 (range: 0.72‐1.00); median specificity: 0.36 (0.14‐0.86) in our validation. Horton's SF‐MoCA (delayed recall, serial subtraction, and orientation) had the most favorable properties in stroke (sensitivity: 0.90, specificity: 0.87, positive predictive value [PPV]: 0.55, and negative predictive value [NPV]: 0.93), whereas Cecato's “MoCA reduced” (clock draw, animal naming, delayed recall, and orientation) performed better in the memory clinic (sensitivity: 0.72, specificity: 0.86, PPV: 0.55, and NPV: 0.93). Conclusions: There are many published SF‐MoCAs. Clinicians and researchers using a SF‐MoCA should be explicit about the content. For all SF‐MoCA, sensitivity is high and similar to the full scale suggesting potential utility as an initial cognitive screening tool. However, choice of SF‐MoCA should be informed by the clinical population to be studied.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Makin, Dr Stephen and Quinn, Dr Terry and Elliott, Emma and Ali, Dr Myzoon
Authors: McDicken, J. A., Elliott, E., Blayney, G., Makin, S., Ali, M., Larner, A. J., and Quinn, T. J.
College/School:College of Medical Veterinary and Life Sciences > Institute of Cardiovascular and Medical Sciences
Journal Name:International Journal of Geriatric Psychiatry
Publisher:Wiley
ISSN:0885-6230
ISSN (Online):1099-1166
Published Online:26 June 2019
Copyright Holders:Copyright © 2019 John Wiley and Sons, Ltd.
First Published:First published in International Journal of Geriatric Psychiatry 34(10):1515-1525
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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