Abstract
The Brief Cognitive Battery (BCB) developed by our group for cognitive assessment of low educated individuals has also shown to be highly accurate in diagnosing dementia of individuals with medium or high levels of education, making it a useful tool for populations with heterogeneous educational background. The application of BCB takes around eight minutes, a rather long period for a screening test.ObjectivesOur aim was to evaluate whether the exclusion of items of the BCB could reduce its application time without losing accuracy.MethodsPatients with Alzheimer’s disease with mild or moderate dementia (N=20), and 30 control subjects were submitted to an abbreviated version of the BCB in which the clock drawing test was not included as an interference test for the delayed recall test. Data from another 22 control individuals who were submitted to the original BCB in another study were also included for comparison. A mathematical formula was employed to compare the two versions of the BCB. Descriptive statistics and ROC (receiver operator characteristic) curves were used (alpha=0.05).ResultsUsing the abbreviated version, the delayed recall test also had high accuracy in diagnosing dementia and the mathematical formula results did not differ to those obtained using the original version, while mean time was reduced by 2 minutes and 37 seconds.ConclusionsThis abbreviated form of the BCB is a potentially valuable tool for screening dementia in population studies as well as in busy clinical practices in countries with heterogeneous educational backgrounds.
Highlights
The Brief Cognitive Battery (BCB) developed by our group for cognitive assessment of low educated individuals has shown to be highly accurate in diagnosing dementia of individuals with medium or high levels of education, making it a useful tool for populations with heterogeneous educational background
Métodos: Pacientes com doença de Alzheimer com demência leve ou moderada (N=20) e 30 indivíduos controle foram submetidos a uma versão abreviada da BCB na qual o teste do desenho do relógio não foi incluído como um teste de interferência para o teste de recordação tardia
20 Alzheimer’s disease (AD) patients according to the NINCDS-ADRDA criteria, with mild or moderate dementia according to the DSM-III-R criteria,[12,13] and 30 individuals without cognitive disturbances, with Clinical Dementia Rating Scale (CDR) (Clinical Dementia Rating)[14,15] of zero
Summary
Abstract – The Brief Cognitive Battery (BCB) developed by our group for cognitive assessment of low educated individuals has shown to be highly accurate in diagnosing dementia of individuals with medium or high levels of education, making it a useful tool for populations with heterogeneous educational background. Methods: Patients with Alzheimer’s disease with mild or moderate dementia (N=20), and 30 control subjects were submitted to an abbreviated version of the BCB in which the clock drawing test was not included as an interference test for the delayed recall test. Métodos: Pacientes com doença de Alzheimer com demência leve ou moderada (N=20) e 30 indivíduos controle foram submetidos a uma versão abreviada da BCB na qual o teste do desenho do relógio não foi incluído como um teste de interferência para o teste de recordação tardia. Resultados: Com a versão abreviada, o teste de recordação tardia também teve alta acurácia no diagnóstico de demência, os resultados das fórmulas matemáticas não foram diferentes daqueles obtidos com a versão original, e o tempo médio foi reduzido em 2 minutos e 37 segundos. Palavras-chave: doença de Alzheimer, demência, diagnóstico, educação, bateria cognitiva breve, testes neuropsicológicos
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