We examined six clock-drawing task (CDT) scoring systems relative to the Executive Interview (EXIT25, a measure of Executive Control Function [ECF]) and the Mini-Mental State Exam (MMSE). Subjects included n = 33 National Institute of Neurological, Communicative Disorders, and Stroke "probable" Alzheimer's disease (AD) cases and n = 52 independent living controls. AD cases and controls differed...

BACKGROUND/AIM This study aimed to identify the functional neuroanatomical correlates of impaired clock drawing test (CDT) performance in patients with Alzheimer's disease (AD). METHOD The CDT was administered to 71 patients with AD, and regional cerebral glucose metabolism (rCMglc) was measured by positron emission tomography (PET). Correlations between CDT scores and rCMglc were examined on...

BACKGROUND/AIMS The Clock Drawing Test (CDT) assesses cognition focusing on executive function and praxis in contrast to the more language-based Mini-Mental State Exam. The CDT may allow early identification of cognitive decline. METHODS A systematic review of the literature was used to identify studies that had used the CDT to predict future cognitive impairment. RESULTS Five studies were ...

[Purpose] The aims of the present study were to analyze the validity and reliability of the Clock Drawing Test (CDT) as a screening tool for cognitive impairments in both stroke patients and older adults in South Korea. [Subjects and Methods] Forty-three stroke patients and 42 elderly residents living in urban communities were recruited. They were divided into three groups according to K-MMSE s...

AIM We sought to identify the relationship between regional cerebral blood flow (rCBF) and error types on the Clock Drawing Test (CDT) in patients with Alzheimer's disease (AD). METHOD The CDT was administered to 142 patients with AD. We used the Mendez scoring method. Their rCBF values were measured by single-photon emission computed tomography. The correlation between the CDT total score an...

[Purpose] The aim of this study was to standardize the clock drawing test (CDT) for people with stroke using Rasch analysis. [Subjects and Methods] Seventeen items of the CDT identified through a literature review were performed by 159 stroke patients. The data was analyzed with Winstep version 3.57 using the Rasch model to examine the unidimensionality of the items' fit, the distribution of th...

BACKGROUND/AIMS Clock Drawing Tests are commonly used for cognitive screening, but their clinical utility has not yet been studied in Chinese Singaporeans. We examined the usefulness of a Clock Drawing Test, CLOX, in detecting dementia in our population and explored its performance in the dementia subtypes, Alzheimer's disease (AD), and the vascular composite group (VCG) of AD with cerebrovascu...

The Clock Drawing Test (CDT) is a cognitive screening tool used in clinical and research settings. Despite its role on the assessment of global cognitive functioning, the specific cognitive components required for test performance are still unclear. We aim to assess the role of executive functioning, global cognitive status, visuospatial abilities, and semantic knowledge on Shulman's CDT perfor...

Increasing the number of elderly persons who have dementia is one of the severe social problems. In Japan, the Ministry of Health, Labor and Welfare expects that the number of dementia patients will be around 5 million in 2025. It is also easily estimated that they require various living supports. Therefore, early detection and prevention of dementia are important. The authors have been develop...