Longitudinal changes in clock drawing test (CDT) performance before and after cognitive decline

Autor: Qianhua Zhao, Langfeng Shi, Qihao Guo, Zhen Hong, Ping Wang
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Male
lcsh:Medicine
Audiology
Neuropsychological Tests
Cognition
Human Performance
Medicine and Health Sciences
Psychology
Longitudinal Studies
Cognitive decline
lcsh:Science
Aged
80 and over
Multidisciplinary
Cognitive Neurology
Middle Aged
Neurology
Research Design
Female
Research Article
medicine.medical_specialty
Scoring system
Clinical Research Design
Cognitive Neuroscience
Sample (statistics)
Cognitive neuroscience
Research and Analysis Methods
Sensitivity and Specificity
Diagnostic Medicine
Alzheimer Disease
Mental Health and Psychiatry
medicine
Dementia
Humans
Psychiatry
Geriatric Assessment
Aged
Behavior
lcsh:R
Scoring methods
Cognitive Psychology
Reproducibility of Results
Biology and Life Sciences
medicine.disease
Cognitive Science
lcsh:Q
Cognition Disorders
Clock drawing test
Psychomotor Performance
Follow-Up Studies
Neuroscience
Zdroj: PLoS ONE, Vol 9, Iss 5, p e97873 (2014)
PLoS ONE
ISSN: 1932-6203
Popis: Background Many scoring systems exist for clock drawing task variants. However, none of them are reliable in evaluating longitudinal changes of cognitive function. The purpose of this study is to create a simple yet optimal scoring procedure to evaluate cognitive decline using a clinic-based sample. Methods Clock-drawings from 121 participants (76 individuals with no dementia and later did not develop dementia after a mean 41.2-month follow-up, 45 individuals with no dementia became demented after a mean 42.3-month follow-up) were analyzed using t-test to determine a new and simplified CDT scoring system. The new scoring method was then compared with other commonly used systems. Results In the converters, there were only 7 items that are significantly different between the initial visits and the second visits. We propose a new scoring system that includes the seven critical items: numbers are equally spaced (12–3–6–9) (p = 0.031), the other eight numbers are marked (p = 0.022), numbers are clockwise (p = 0.002), all numbers are correct (p = 0.030), distance between numbers is constant (p = 0.016), clock has two hands (p = 0.000), arrows are drawn (p = 0.003). Compared with other traditionally used scoring methods, this based change clock drawing test (BCCDT) has one of the most balanced sensitivities/specificities with a clinic-based sample. Conclusions The new CDT scoring system provides further evidence in support of a simple and reliable clock-drawing scoring system in follow-up studies to evaluate cognitive decline, which can be used in assessing the efficacy of medicine.
Databáze: OpenAIRE
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