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Diagnosing dementia in lower educated older persons: validation of a Brazilian Portuguese version of the Rowland Universal Dementia Assessment Scale (RUDAS).

Diagnosing dementia in lower educated older persons: validation of a Brazilian Portuguese version of the Rowland Universal Dementia Assessment Scale (RUDAS).
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de Araujo NB, Nielsen TR, Engedal K, Barca ML, Coutinho ES, Laks J,


de Araujo NB, Nielsen TR, Engedal K, Barca ML, Coutinho ES, Laks J, (click to view)

de Araujo NB, Nielsen TR, Engedal K, Barca ML, Coutinho ES, Laks J,

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Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999) 2018 02 15() 0 pii S1516-44462018005002104
Abstract
OBJECTIVE
To validate the Rowland Universal Dementia Assessment Scale for use in Brazil (RUDAS-BR).

METHODS
We first completed an English-Brazilian Portuguese translation and back-translation of the RUDAS. A total of 135 subjects over 60 years of age were included: 65 cognitively healthy and 70 with Alzheimer’s disease (AD) according to the DSM-IV and Neurological and Communicative Disorders and Stroke/Alzheimer’s Disease and Related Disorders Association (NINCDS-ADRDA) criteria. All participants completed an interview and were screened for depression. The receiver operating characteristic curves of the RUDAS were compared with those of the Mini Mental State Examination (MMSE) regarding the sensitivity and specificity of cutoffs, taking education into consideration.

RESULTS
The areas under the curve were similar for the RUDAS-BR (0.87 [95%CI 0.82-0.93]) and the MMSE (0.84 [95%CI 0.7-0.90]). RUDAS-BR scores < 23 indicated dementia, with sensitivity of 81.5% and specificity of 76.1%. MMSE < 24 indicated dementia, with sensitivity of 72.3% and specificity of 78.9%. The cutoff score was influenced by years of education on the MMSE, but not on the RUDAS-BR. CONCLUSIONS
The RUDAS-BR is as accurate as the MMSE in screening for dementia. RUDAS-BR scores were not influenced by education. The RUDAS-BR may improve the cognitive assessment of older persons who are illiterate or of lower educational attainment.

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