Vol. 7 nº 4 - Oct/Nov/Dec de 2013
Original Article Páginas: 374 a 379

Mattis dementia rating scale (DRS) normative data for the brazilian middle-age and elderly populations

Authors Maria Paula Foss1; Viviane Amaral de Carvalho2; Thais Helena Machado3; Geraldo Cássio dos Reis4; Vitor Tumas5; Paulo Caramelli6;Ricardo Nitrini7; Cláudia Sellitto Porto8

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keywords: DRS, illiterates, elderly, schooling, neuropsychological assessment.

ABSTRACT:
OBJECTIVE: To expand norms for the Mattis Dementia Rating Scale (DRS) for the Brazilian middle-age and elderly populations.
METHODS: The DRS was administered to 502 individuals without cognitive deficits, 312 women and 190 men, aged 50 years or over and with educational level ranging from 0 to 13 years or more. The sample was composed of subjects who participated in other studies, from Caeté (Minas Gerais state), Ribeirão Preto (São Paulo state) and São Paulo (São Paulo state). Participants were divided into four schooling groups (illiterate, 1 to 4 years, 5 to 12 years and 13 years or more). The subjects were divided into four groups according to age (50 to 60, 61 to 70, 71 to 80, and 80 years or over).
RESULTS: Normative data for DRS scores are expressed as percentile values. The group with lowest schooling and subjects older than 80 years had the worst scores.
CONCLUSION: As expected, age and education were strongly correlated with DRS scores. Illiterates and older old individuals performed worse than the other groups. These data might help to improve the accuracy of the diagnosis of cognitive impairment and dementia in Brazilian middle-age and elderly populations.

 

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