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Screening for dementia of the alzheimer type in the community: the utility of the Clock Drawing Test

Cahn, D. A. and Salmon, D. P. and Monsch, A. U. and Butters, N. and Wiederholt, W. C. and Corey-Bloom, J. and Barrett-Connor, E.. (1996) Screening for dementia of the alzheimer type in the community: the utility of the Clock Drawing Test. Archives of clinical neuropsychology, 11 (6). pp. 529-539.

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Official URL: https://edoc.unibas.ch/79867/

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Abstract

This study reports the sensitivity and specificity of the Clock Drawing Test (CDT) for detecting dementia of the Alzheimer type in a community-dwelling sample of elderly subjects. Forty-two patients with clinically diagnosed Alzheimer's disease and 237 cognitively intact subjects were administered the CDT as part of an epidemiological study of aging and dementia. Three individual measures of clock drawing performance (quantitative score, qualitative score, and combined quantitative and qualitative score) were determined for each participant. When qualitative elements such as errors and strategies were incorporated into the CDT score, the sensitivity was 84% and the specificity was 72%. The findings suggest that a CDT score which evaluates qualitative and quantitative features provides reasonably good discrimination between normal elderly individuals and DAT patients. However, the CDT appears to have limited utility as a single screening instrument in the community. Instruments such as the Dementia Rating Scale (Mattis, 1976) provide better discrimination of DAT, indicating that functions such as memory and verbal fluency need to be assessed during screening.
Faculties and Departments:03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Geriatrie > Geriatrie (Kressig)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Geriatrie > Geriatrie (Kressig)
07 Faculty of Psychology > Departement Psychologie
07 Faculty of Psychology > Departement Psychologie > Forschungsbereich Klinische Psychologie und Neurowissenschaften > Molecular Neuroscience (Papassotiropoulos)
UniBasel Contributors:Monsch, Andreas U. U
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Oxford University Press
ISSN:0887-6177
e-ISSN:1873-5843
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:03 Nov 2021 13:41
Deposited On:03 Nov 2021 13:41

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