title: Diagnostic Accuracy of the Cognitive State Test in the Detection of Dementia Among Iranian Older Adults.
abstract: 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.
authors.forename: Mohammad-Sajjad
authors.initials: MS
authors.lastname: Lotfi
authors.forename: Zahra
authors.initials: Z
authors.lastname: Tagharrobi
authors.forename: Khadijeh
authors.initials: K
authors.lastname: Sharifi
authors.forename: Javad
authors.initials: J
authors.lastname: Abolhasani
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003072:Cognition Disorders / Q000175:diagnosis*; D003704:Dementia / Q000175:diagnosis*; D005260:Female; D015577:Geriatric Assessment / Q000379:methods*; D006801:Humans; D007492:Iran; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity