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Course of the scores on the 24-item Brief Psychiatric Rating Scale-Expanded version (BPRS-24) in the groups with comorbid substance use disorder (SUD) and in the non-comorbid group (non-SUD). Both groups obtained about a 50% reduction from baseline to endpoint, but the non-SUD group scored constantly lower throughout the study, indicating that its participants fared better than the comorbid SUD group.
