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MACE versus MoCA: equivalence or superiority? Pragmatic diagnostic test accuracy study

Published online by Cambridge University Press:  07 March 2017

A.J. Larner
A.J. Larner*
Affiliation:
Cognitive Function Clinic, Walton Centre for Neurology and Neurosurgery, Liverpool, UK
*
Correspondence should be addressed to: A.J. Larner, Cognitive Function Clinic, Walton Centre for Neurology and Neurosurgery, Lower Lane, Fazakerley, Liverpool, L9 7LJ, UK. Email: [email protected].
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Abstract

Background:

The Mini-Addenbrooke's Cognitive Examination (MACE) is a new brief cognitive screening instrument for dementia and mild cognitive impairment (MCI). Historical data suggest that MACE may be comparable to the Montreal Cognitive Assessment (MoCA), a well-established cognitive screening instrument, in secondary care settings, but no head-to-head study has been reported hitherto.

Methods:

A pragmatic diagnostic accuracy study of MACE and MoCA was undertaken in consecutive patients referred over the course of one year to a neurology-led Cognitive Function Clinic, comparing their performance for the diagnosis of dementia and MCI using various test metrics.

Results:

In a cohort of 260 patients with dementia and MCI prevalence of 17% and 29%, respectively, both MACE and MoCA were quick and easy to use and acceptable to patients. Both tests had high sensitivity (>0.9) and large effect sizes (Cohen's d) for diagnosis of both dementia and MCI but low specificity and positive predictive values. Area under the receiver operating characteristic curve was excellent for dementia diagnosis (both >0.9) but less good for MCI (MoCA good and MACE fair). In contrast, weighted comparison suggested test equivalence for dementia diagnosis but with a slight net benefit for MACE for MCI diagnosis.

Conclusions:

MACE is an acceptable and accurate test for the assessment of cognitive problems, with performance comparable to MoCA. MACE appears to be a viable alternative to MoCA for testing patients with cognitive complaints in a secondary care setting.

Keywords

dementiadiagnosisMACEMCIMoCAmemory clinic
Type
Research Article
Information
International Psychogeriatrics , Volume 29 , Issue 6 , June 2017 , pp. 931 - 937
Copyright
Copyright © International Psychogeriatric Association 2017 

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