Next, univariate regression for the CGI-SCH using individual symptoms of the BPRS was performed. Methods: We evaluated 200 schizophrenia patients using the BPRS and the CGI-SCH and drew the scatter plot distributions of the two scales. The aims of the study were 1) to investigate whether the modification of relative weights of items of the BPRS is able to enhance its correlation with the Clinical Global Impression-Schizophrenia scale (CGI-SCH) and 2) to construct a potential modified BPRS. Stata Corporation, “Stata User’s Guide, Release 10.0,” Stata Corporation, College Station, 2007.Ī Modification of the Relative Weightings of Symptoms Utilizing a Logistic Function to Enhance the Linearity of the Brief Psychiatric Rating Scale: A Retrospective AnalysisĪUTHORS: Jitsuki Sawamura, Shigeru Morishita, Jun IshigookaĮvaluation Scale Linearity Weightings Modification BPRS SchizophreniaĪBSTRACT: Introduction: Although the Brief Psychiatric Rating Scale (BPRS) is widely used for evaluating patients with schizophrenia, the meaning of the weights of the individual symptoms is ambiguous.

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