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Comparative Study
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, P.H.S.
Clinical implications of Brief Psychiatric Rating Scale scores.
British Journal of Psychiatry 2005 October
BACKGROUND: Despite the widespread use of the Brief Psychiatric Rating Scale (BPRS), the clinical meaning of its total score and cut-off values used to define treatment response are unclear.
AIMS: To link the BPRS to Clinical Global Impression (CGI) ratings.
METHOD: Equipercentile linking of BPRS and CGI ratings from seven drug trials in acutely ill patients with schizophrenia (n=1979).
RESULTS: 'Mildly ill' according to the CGI approximately corresponded to a BPRS total score of 31, 'moderately ill'to a BPRS score of 41 and'markedly ill'to a BPRS score of 53.'Minimally improved'according to the CGI score was associated with percentage BPRS reductions of 24, 27 and 30% at weeks 1, 2 and 4, respectively. The corresponding numbers for a CGI rating of 'much improved' were 44, 53 and 58%.
CONCLUSIONS: The results provide a clearer understanding of how to interpret BPRS total and percentage reduction scores in clinical trials with patients acutely ill with schizophrenia who are experiencing positive symptoms.
AIMS: To link the BPRS to Clinical Global Impression (CGI) ratings.
METHOD: Equipercentile linking of BPRS and CGI ratings from seven drug trials in acutely ill patients with schizophrenia (n=1979).
RESULTS: 'Mildly ill' according to the CGI approximately corresponded to a BPRS total score of 31, 'moderately ill'to a BPRS score of 41 and'markedly ill'to a BPRS score of 53.'Minimally improved'according to the CGI score was associated with percentage BPRS reductions of 24, 27 and 30% at weeks 1, 2 and 4, respectively. The corresponding numbers for a CGI rating of 'much improved' were 44, 53 and 58%.
CONCLUSIONS: The results provide a clearer understanding of how to interpret BPRS total and percentage reduction scores in clinical trials with patients acutely ill with schizophrenia who are experiencing positive symptoms.
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