The Clock Drawing Test. Performance differences between the free-drawn and incomplete-copy versions in patients with MCI and dementia
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Associação Neurologia Cognitiva e do Comportamento
2016
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| _version_ | 1876440431511732224 |
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| author | Bárbara Costa Beber |
| author_facet | Bárbara Costa Beber |
| contents | The Clock Drawing Test. Performance differences between the free-drawn and incomplete-copy versions in patients with MCI and dementia Bárbara Costa Beber Renata Kochhann Bruna Matias Márcia Lorena Fagundes Chaves Medicina Dementia cognition diagnosis Alzheimer’s disease 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. 2016 artículo científico 1980-5764 https://www.redalyc.org/articulo.oa?id=339547442009 en http://www.redalyc.org/revista.oa?id=3395 Dementia & Neuropsychologia application/pdf Associação Neurologia Cognitiva e do Comportamento Dementia & Neuropsychologia (Brasil) Num.3 Vol.10 |
| format | Artículo científico |
| id | redalyc_339547442009 |
| institution | Redalyc |
| language | en |
| publishDate | 2016 |
| publisher | Associação Neurologia Cognitiva e do Comportamento |
| spellingShingle | The Clock Drawing Test. Performance differences between the free-drawn and incomplete-copy versions in patients with MCI and dementia Bárbara Costa Beber Medicina Dementia cognition diagnosis Alzheimer’s disease The Clock Drawing Test. Performance differences between the free-drawn and incomplete-copy versions in patients with MCI and dementia Bárbara Costa Beber Renata Kochhann Bruna Matias Márcia Lorena Fagundes Chaves Medicina Dementia cognition diagnosis Alzheimer’s disease 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. 2016 artículo científico 1980-5764 https://www.redalyc.org/articulo.oa?id=339547442009 en http://www.redalyc.org/revista.oa?id=3395 Dementia & Neuropsychologia application/pdf Associação Neurologia Cognitiva e do Comportamento Dementia & Neuropsychologia (Brasil) Num.3 Vol.10 |
| title | The Clock Drawing Test. Performance differences between the free-drawn and incomplete-copy versions in patients with MCI and dementia |
| topic | Medicina Dementia cognition diagnosis Alzheimer’s disease |
| url | https://www.redalyc.org/articulo.oa?id=339547442009 |