Diagnostic Accuracy of the Cognitive State Test in the Detection of Dementia Among Iranian Older Adults

Dementia screening tests need to have acceptable sensitivity and specificity. The current study aimed to determine the cutoff point of the Persian Cognitive State Test (P-COST) and test its diagnostic accuracy. The study was conducted using the known-groups method. A purposive sample of 50 patients...

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Bibliographic Details
Published in:Research in gerontological nursing 2015-11, Vol.8 (6), p.293-299
Main Authors: Lotfi, Mohammad-Sajjad, Tagharrobi, Zahra, Sharifi, Khadijeh, Abolhasani, Javad
Format: Article
Language:English
Subjects:
Accuracy
Aged
Aged, 80 and over
Cognition Disorders - diagnosis
Cronbach's alpha
Dementia
Dementia - diagnosis
Female
Geriatric Assessment - methods
Humans
Illiteracy
Iran
Male
Middle Aged
Neuropsychological Tests
Nursing
Older people
Reproducibility of Results
Sample size
Sensitivity and Specificity
Validity
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Summary:Dementia screening tests need to have acceptable sensitivity and specificity. The current study aimed to determine the cutoff point of the Persian Cognitive State Test (P-COST) and test its diagnostic accuracy. The study was conducted using the known-groups method. A purposive sample of 50 patients with dementia and 150 older adults without dementia was recruited in Kashan, Iran. The reference standard included clinical interviewing and findings of a computerized tomography scan. The P-COST was the index test. Mean P-COST scores of the two groups differed significantly (Dementia screening tests need to have acceptable sensitivity and specificity. The current study aimed to determine the cutoff point of the Persian Cognitive State Test (P-COST) and test its diagnostic accuracy. The study was conducted using the known-groups method. A purposive sample of 50 patients with dementia and 150 older adults without dementia was recruited in Kashan, Iran. The reference standard included clinical interviewing and findings of a computerized tomography scan. The P-COST was the index test. Mean P-COST scores of the two groups differed significantly ( p < 0.001). The P-COST is a sensitive and precise test for assessing cognitive state and thus can be used for dementia screening and monitoring of older adults' health. [Res Gerontol Nurs. 2015; 8(6):293–299.]
ISSN:1940-4921
1938-2464
DOI:10.3928/19404921-20150521-01