Validity and Clinical Utility of Different Clock Drawing Test Scoring Systems in Multiple Forms of Dementia

2018 ◽  
Vol 31 (3) ◽  
pp. 114-122 ◽  
Author(s):  
Diana Duro ◽  
Miguel Tábuas-Pereira ◽  
Sandra Freitas ◽  
Beatriz Santiago ◽  
Maria Amália Botelho ◽  
...  
Keyword(s):  
Clinical Utility ◽  
Lewy Bodies ◽  
Scoring Systems ◽  
Cognitive Screening ◽  
Clock Drawing Test ◽  
Screening Measure ◽  
Clock Drawing ◽  
Drawing Test ◽  
Tertiary Center ◽  
Cognitive Screening Measure

The Clock Drawing Test (CDT) has a known potential for the detection of cognitive impairment in populations with dementia, especially Alzheimer disease (AD). Our aim was to compare the clinical utility of 3 CDT scoring systems (Rouleau, Cahn, and Babins) in several pathologies with cognitive compromise from a tertiary center memory clinic. We selected patients with a clinical diagnosis of mild stage AD, behavioral variant frontotemporal dementia (FTD), vascular dementia (VaD), dementia with Lewy bodies (DLB), and Parkinson disease with dementia (PDD). The results showed significant differences between the several diagnoses with the following pattern of results: AD, DLB < FTD, VaD, PDD. Qualitative analysis of clock drawing errors confirmed the stimulus-bound response as a hallmark of AD, while conceptual deficit was significantly more prevalent in patients with AD and DLB. Our results supported the CDT potential as a cognitive screening measure for mild dementia, particularly sensitive to AD and DLB, especially when we used the Cahn scoring system and its analysis of qualitative errors.

scholarly journals The Clock Drawing Test: Performance differences between the free-drawn and incomplete-copy versions in patients with MCI and dementia

2016 ◽  
Vol 10 (3) ◽  
pp. 227-231 ◽  
Author(s):  
Bárbara Costa Beber ◽  
Renata Kochhann ◽  
Bruna Matias ◽  
Márcia Lorena Fagundes Chaves
Keyword(s):  
Cognitive Impairment ◽  
Test Performance ◽  
Diagnostic Value ◽  
Control Group ◽  
Cognitive Screening ◽  
Scoring Method ◽  
Clock Drawing Test ◽  
Clock Drawing ◽  
Healthy Elderly ◽  
Drawing Test

ABSTRACT Background: The Clock Drawing Test (CDT) is a brief cognitive screening tool for dementia. Several different presentation formats and scoring methods for the CDT are available in the literature. Objective: In this study we aimed to compare performance on the free-drawn and "incomplete-copy" versions of the CDT using the same short scoring method in Mild Cognitive Impairment (MCI) and dementia patients, and healthy elderly participants. Methods: 90 participants (controlled for age, sex and education) subdivided into control group (n=20), MCI group (n=30) and dementia group (n=40) (Alzheimer's disease - AD=20; Vascular Dementia - VD=20) were recruited for this study. The participants performed the two CDT versions at different times and a blinded neuropsychologist scored the CDTs using the same scoring system. Results: The scores on the free-drawn version were significantly lower than the incomplete-copy version for all groups. The dementia group had significantly lower scores on the incomplete-copy version of the CDT than the control group. MCI patients did not differ significantly from the dementia or control groups. Performance on the free-drawn copy differed significantly among all groups. Conclusion: The free-drawn CDT version is more cognitively demanding and sensitive for detecting mild/early cognitive impairment. Further evaluation of the diagnostic value (accuracy) of the free-drawn CDT in Brazilian MCI patients is needed.

Interrater Reliability of Three Clock Drawing Test Scoring Systems

2001 ◽  
Vol 8 (3) ◽  
pp. 174-179 ◽  
Author(s):  
Marne B. South ◽  
Kevin W. Greve ◽  
Kevin J. Bianchini ◽  
Donald Adams
Keyword(s):  
Interrater Reliability ◽  
Scoring Systems ◽  
Clock Drawing Test ◽  
Clock Drawing ◽  
Drawing Test ◽  
Test Scoring

UTILITY OF THE CLOCK DRAWING TEST AS COGNITIVE SCREENING IN PATIENTS WITH ARTERIAL HYPERTENSION

2018 ◽  
Vol 36 (Supplement 1) ◽  
pp. e127-e128
Author(s):  
A. Vicario ◽  
G.H. Cerezo ◽  
P. Conti ◽  
P. Forcada ◽  
A.E. De Cerchio ◽  
...  
Keyword(s):  
Arterial Hypertension ◽  
Cognitive Screening ◽  
Clock Drawing Test ◽  
Clock Drawing ◽  
Drawing Test

Is the Clock Drawing Test a screening tool for the diagnosis of mild cognitive impairment? A systematic review

2009 ◽  
Vol 22 (1) ◽  
pp. 56-63 ◽  
Author(s):  
Lena Ehreke ◽  
Melanie Luppa ◽  
Hans-Helmut König ◽  
Steffi G. Riedel-Heller
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Literature Search ◽  
Screening Tool ◽  
Cognitive Screening ◽  
Clock Drawing Test ◽  
Clock Drawing ◽  
Drawing Test ◽  
Diagnosis Of Dementia ◽  
Mean Differences

ABSTRACTBackground:The clock drawing test (CDT) is a common and widely used cognitive screening instrument for the diagnosis of dementia. However, it has remained unclear whether it is a suitable method to identify mild cognitive impairment (MCI). The aim of this paper is to review systematically the studies concerning the utility of the CDT in diagnosing MCI.Method:A systematic literature search was conducted. All studies dealing with utility of CDT in diagnosing MCI regardless of the applied CDT scoring system and MCI concept were selected.Results:Nine relevant studies were identified. The majority of the studies compared average CDT scores of cognitively healthy and mildly impaired subjects, and four of them identified significant mean differences. If reported, sensitivity and specificity have been mostly unsatisfactory.Conclusion:CDT should not be used for MCI-screening.

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