Vol. 1 nº 3 - Jul/Aug/Set de 2007
Original Article Páginas: 260 a 265

Sensitivity and applicability of the Brazilian version of the Brief Assessment of Cognition in Schizophrenia (BACS)

Authors João Vinícius Salgado1,2, Carolina F. Richards Carvalhaes2, Annelise de Matos Pires2, Maila de Castro L. das Neves1, Breno Fiúza Cruz1, Clareci Silva Cardoso3, Helio Lauar1, Antonio Lúcio Teixeira4, Richard S.E. Keefe5


keywords: schizophrenia, cognition, neuropsychological assessment, BACS.

Cognitive assessment in schizophrenia has traditionally used batteries that are long and complex or differ widely in their content. The Brief Assessment of Cognition in Schizophrenia (BACS) has been developed to cover the main cognitive deficits of schizophrenia as well as to be easily and briefly administered, portable, sensitive and reliable. Objectives: To investigate the applicability and sensitivity of the Brazilian Version of the BACS (Brazilian-BACS). Methods: Performance of 20 stable patients with schizophrenia on the Brazilian-BACS was compared to 20 matched healthy controls. Results: Applying the Brazilian-BACS required 43.4±8.4 minutes for patients and 40.5±5.7 minutes for controls (p=0.17). All tests demonstrated significant differences between controls and patients (P<0.01). Pearson's correlation analysis and Cronbach's a evidenced a high internal consistency for patient performance. The cognitive deficit in the patients was approximately 1.5 standard deviations below controls. These results were consistent with those reported in the validation of the original version and in meta-analyses of similar studies. Conclusions: The Brazilian-BACS displayed good applicability and sensitivity in assessing the major cognitive constructs that are impaired in schizophrenia. Thus, the Brazilian-BACS seems to be a promising tool for assessing cognition in patients with schizophrenia in Brazil.


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