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 5 th 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.
CITATION STYLE
Castro-Costa, É., Fuzikawa, C., Uchoa, E., Firmo, J. O. A., & Lima-Costa, M. F. (2008). Norms for the mini-mental state examination: Adjustment of the cut-off point in population-based studies (evidences from the Bambuí health aging study). Arquivos de Neuro-Psiquiatria, 66(3 A), 524–528. https://doi.org/10.1590/S0004-282X2008000400016
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