The Dépistage Cognitif de Québec: A New Clinician's Tool for Early Recognition of Atypical Dementia.

TitleThe Dépistage Cognitif de Québec: A New Clinician's Tool for Early Recognition of Atypical Dementia.
Publication TypeJournal Article
Year of Publication2018
AuteursSellami, L, Meilleur-Durand, S, Chouinard, A-M, Bergeron, D, Verret, L, Poulin, S, Jean, L, Fortin, M-P, Nadeau, Y, Molin, P, Caron, S, Macoir, J, Hudon, C, Bouchard, RW, Laforce, Jr, R
JournalDement Geriatr Cogn Disord
Volume46
Issue5-6
Pagination310-321
Date Published2018
ISSN1421-9824
Abstract

INTRODUCTION: Early recognition of atypical dementia remains challenging partly because of lack of cognitive screening instruments precisely tailored for this purpose.METHODS: We assessed the validity and reliability of the Dépistage Cognitif de Québec (DCQ; www.dcqtest.org), a newly developed cognitive screening test, to detect atypical dementia using a multicenter cohort of 628 participants. Sensitivity and specificity were compared to the Montreal Cognitive Assessment (MoCA). A predictive diagnostic algorithm for atypical dementia was determined using classification tree analysis.RESULTS: The DCQ showed excellent psychometric properties. It was significantly more accurate than the MoCA to detect atypical dementia. All correlations between DCQ indexes and standard neuropsychological measures were significant. A statistical model distinguished typical from atypical dementia with a predictive power of 79%.DISCUSSION: The DCQ is a better tool to detect atypical dementia than standard cognitive screening tests. Expanding the clinician's tool kit with the DCQ could reduce missed/delayed identification of atypical dementia and accelerate therapeutic intervention.

DOI10.1159/000494348
Alternate JournalDement Geriatr Cogn Disord
PubMed ID30481754