Norms for the mini-mental state examination: adjustment of the cut-off point in population-based studies (evidences from the Bambuí health aging study)

Author:

Castro-Costa Érico1,Fuzikawa Cíntia2,Uchoa Elizabeth3,Firmo Josélia Oliveira Araújo2,Lima-Costa Maria Fernanda2

Affiliation:

1. Federal University of Minas Gerais; Oswaldo Cruz Foundation, Brazil; Faculty of Health and Human Ecology, Brazil; King's College London, Institute of Psychiatry, UK

2. Federal University of Minas Gerais; Oswaldo Cruz Foundation, Brazil

3. Federal University of Minas Gerais; Oswaldo Cruz Foundation, Brazil; Federal University of Minas Gerais, Brazil

Abstract

OBJECTIVE: To estimate the prevalence of cognitive impairment in an elderly population-based cohort, using several Mini-Mental State Examination (MMSE) cut-off points recommended by Brazilian authors and to examine the percentile distribution of MMSE scores in the study population. METHOD: A total of 1558 subjects aged >60 years (89.4% of the total), living in the city of Bambuí, MG, completed the MMSE and were included in the present study. RESULTS: The estimated prevalences of cognitive impairment varied from 13.2% to 27.0% depending on the cut-off point and agreement varied widely between them (kappa range: 0.38 to 0.88). Cut-off point 13/14 corresponded to the 5th percentile and 21/22 corresponded to the lower quartile of the MMSE score distribution. CONCLUSION: In the absence of comparable cut-off points, percentile distributions are more adequate for population-based studies of elderly with low schooling level.

Publisher

FapUNIFESP (SciELO)

Subject

Neurology,Clinical Neurology

Reference24 articles.

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2. IPA survey of brief cognitive screening instruments;Shulman KI;Int Psychogeriatr,2006

3. Population-based norms for the Mini-Mental State Examination by age and educational level;Crum RM;JAMA,1993

4. The Mini-Mental State Examination: a comprehensive review;Tombaugh TN;J Am Geriatr Soc,1992

5. O mini-exame do estado mental em uma população geral: impacto da escolaridade;Bertolucci PHF;Arq Neuropsiquiatr,1994

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