Journal
ARQUIVOS DE NEURO-PSIQUIATRIA
Volume 60, Issue 1, Pages 61-69Publisher
ASSOC ARQUIVOS NEURO- PSIQUIATRIA
DOI: 10.1590/S0004-282X2002000100012
Keywords
dementia; epidemiology; prevalence; risk factors; Alzheimer's disease; vascular dementia
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Objective: To analyse the prevalence studies of dementia from 1994 to 2000. Methods: The papers were searched on Medline and Lilacs and the inclusion criteria were: to be an original study, that estimated dementia prevalence and investigated community samples. Results: thirty-eight studies were evaluated from all continents. The mean age-specific prevalence rates of dementia were 1,17% for the 65-69 years group, and 54,83% over 95 years. The results were strongly influenced by age. Dementia prevalence rates were higher on women on 75% of the papers reviewed. The Alzheimer's disease/vascular dementia ratio was higher in South America and lower in Asia. Discussion: Methodological advances were found, specially regarding the homogeneity of diagnostic criteria. The effect of age on the rates of dementia prevalence was pronounced, up to 90 years of age.
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