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E-ISSN : 2733-4538
The purpose of this study was to examine the efficiency of the Clock Drawing Test(CDT) for differentiating mild dementia from geriatric depression and normal elderly person. The CDT was administered to 25 patients with clinically diagnosed mild dementia, 25 with geriatric depression and 25 normal control and these groups were similar in age, education and gender. The cut-off scores, efficiencies, sensitivities, specificities, positive likelihood ratio and negative likelihood ratio of each group were calculated and then the analysis of error type was conducted. CDT significantly discriminated mild dementia patients from geriatric depression patients or normal controls but could not discriminate geriatric depression patients from normal controls. In the error type analysis of clock drawing, 'stimulus bound response', 'conceptual error' and 'spatial and planning error' were more frequent in patients with mild dementia than in normal controls or in geriatric depression patients. Finally, the suggestions, limitations and further issues for future study were discussed.
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