Establishing the cut-off scores for the severity ranges of schizophrenia on the BPRS-6 scale: findings from the REAP-AP

Figures & data

Figure 1. Correlation between the Brief Psychiatric Rating Scale-6 (BPRS-6) and BPRS-18 total scores in the Research on Asian Psychotropic Prescription Patterns for Antipsychotics (REAP-AP) (n = 1,438). The commonly used antipsychotics, including risperidone, clozapine, olanzapine, haloperidol, and chlorpromazine, are presented on the right side of the figure.

Table 1. Cut-off points for the remission and the severity ratings of schizophrenia in the Brief Psychiatric Rating Scale-6 (BPRS-6) (n = 1,438).

CGI-S	N	Mean BPRS-6 (SD)	Cut-off score	Sensitivity	Specificity
1–2 (remission)	388	1.4 (0.2)	4	0.75	0.88
3 (mild)	303	5.3 (0.2)	9	0.79	0.89
4–5 (moderate)	732	12.3 (0.1)	19	0.87	0.89
6–7 (severe)	15	22.5 (1.0)

CGI-S, Clinical Global Impression-Severity.