Evaluation of Mini-Mental State Examination scores according to different age and education strata, and sex, in a large Brazilian healthy sample

Avaliação dos escores do Mini-Exame do Estado Mental de acordo com diferentes faixas de idade e escolaridade, e sexo, em uma grande amostra brasileira de sujeitos saudáveis

Abstract

Until better measures have been accepted for wider use, the Mini-Mental State Examination (MMSE) will continue to be utilized. In this context, knowledge on characteristics and determinants of its distribution for the Brazilian population are particularly valuable. The present study aimed to evaluate, based on multivariate analysis, the independent effect of age, educational level and sex, and their interactions, on MMSE scores in a healthy sample.

Methods:

Demographic data and scores on the MMSE of 1,553 healthy individuals were analyzed. The sample was grouped according to age and education.

Results:

The sample was composed of 963 females (62%), mean age ±SD was 49.6±20.7 yrs (range 20 to 92 yrs). The mean years of education ±SD was 8.9±5.5 yrs (range 0 to 28 yrs). The mean score ±SD on the MMSE was 27.3±2.7 (range 15 to 30). A significant effect of the interaction between education and sex (p=0.011), and also between education and age was observed (p=0.003). An independent effect of education (p<0.001) and age (p<0.001) was found. Participants from the higher educated group presented higher MMSE scores than the other groups. Younger adults presented higher MMSE scores than the other age groups.

Conclusions:

We observed an effect of education and age on MMSE scores. Younger individuals and higher educated participants presented higher scores.

Key words:
Mini-Mental State Examination; cognition; cognitive assessment; educational attainment; age; sex.

Resumo

O Mini-Exame do Estado Mental (MEEM) continuará sendo amplamente utilizado até que outras medidas sejam estabelecidas, por isso o conhecimento de características e determinantes de sua distribuição na população é particularmente útil. O presente estudo tem como objetivo avaliar o efeito independente e suas interações da idade, sexo e nível educacional em uma análise multivariada sobre os escores do MEEM em uma amostra saudável.

Métodos:

Dados demográficos e escores do MEEM de 1.553 indivíduos saudáveis foram analisados. A amostra foi agrupada de acordo com a idade e a educação.

Resultados:

A amostra foi composta de 963 mulheres (62%), a média ±DP da idade foi 49,6±20,7 (variando entre 20 e 92 anos). A média ±DP dos anos de estudo foi 8,9±5,5 (variando entre 0 e 28 anos de estudo). A média ±DP dos escores do MEEM foi 27,3±2,7 (variando entre 15 e 30). Um efeito significativo na interação entre educação e sexo foi observado (p=0,011). Um efeito significativo na interação entre educação e idade também foi observado (p=0,003). Um efeito independente da educação (p<0,001) e da idade (p<0,001) foi observado. Participantes do grupo com alto nível educacional apresentaram maiores escores no MEEM do que os participantes dos outros grupos. Do mesmo modo, adultos jovens apresentaram maiores escores no MEEM do que os participantes dos outros grupos etários.

Conclusões:

Nós observamos efeito da educação e da idade sobre os escores do MEEM. Indivíduos mais jovens e indivíduos com alto nível educacional apresentaram escores maiores no MEEM.

Palavras-chave:
Mini-Exame do Estado Mental; cognição; avaliação cognitiva; nível educacional; idade; sexo.

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Publication Dates

• Publication in this collection
  Apr-Jun 2009

History

• Received
  27 Feb 2009
• Accepted
  12 May 2009

History