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Int Psychogeriatr ; 21(3): 560-7, 2009 Jun.
Article in English | MEDLINE | ID: mdl-19327202

ABSTRACT

OBJECTIVE: The purpose of the present study was to investigate the influence that education and depression have on the performance of elderly people in neuropsychological tests. METHODS: The study was conducted at the Institute of Psychiatry, University of São Paulo School of Medicine, Hospital das Clínicas. All of the individuals evaluated were aged 60 or older. The study sample consisted of 59 outpatients with depressive disorders and 51 healthy controls. We stratified the sample by level of education: low = 1-4 years of schooling; high = 5 or more years of schooling. Evaluations consisted of psychiatric assessment, cognitive assessment, laboratory tests and cerebral magnetic resonance imaging. RESULTS: We found that level of education influenced all the measures of cognitive domains investigated (intellectual efficiency, processing speed, attention, executive function and memory) except the Digit Span Forward and Fuld Object Memory Evaluation (immediate and delayed recall), whereas depressive symptoms influenced some measures of memory, attention, executive function and processing speed. Although the combination of a low level of education and depression had a significant negative influence on Stroop Test part B, Trail Making Test part B and Logical Memory (immediate recall), we found no other significant effects of the interaction between level of education and depression. CONCLUSION: The results of this study underscore the importance of considering the level of education in the analysis of cognitive performance in depressed elderly patients, as well as the relevance of developing new cognitive function tests in which level of education has a reduced impact on the results.


Subject(s)
Cognition Disorders/diagnosis , Depressive Disorder, Major/diagnosis , Educational Status , Neuropsychological Tests/statistics & numerical data , Aged , Cognition Disorders/psychology , Depressive Disorder, Major/psychology , Female , Geriatric Assessment , Humans , Male , Middle Aged , Psychiatric Status Rating Scales , Psychometrics , Severity of Illness Index
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