Establishing the cut-off score for aggression on the Brief Psychiatric Rating Scale-Excited Component (BPRS-EC) in schizophrenia patients

摘要

OBJECTIVE: We aimed to present the scalability and cut-off score for the presence ofaggression on the Brief Psychiatric Rating Scale-Excited Component (BPRS-EC) inschizophrenia patients.METHODS: From the Research on Asian Psychotropic Prescription Patterns for Antipsychotics,1,438 Asian patients with schizophrenia were recruited in present study. The Mokken analysiswas used to evaluate scalability of the BPRS-EC. The receiver operating characteristic (ROC)curve was used to establish the optimal cut-off score for the presence of aggression onthe BPRS-6 in schizophrenia patients.RESULTS: The Mokken model presented that the scalability of the BPRS-EC was considered tohave a strong “unidimensionality” (coefficient of scalability = 0.57). The ROC curve showedthat, with the cut-off score of 5, the total score on the BPRS-EC distinguished the absenceand presence of aggression in schizophrenia patients.CONCLUSION: The BPRS-EC can be used as a supplementary scale for evaluating aggressionin patients with schizophrenia.