Is there a linear relationship between the Brief Psychiatric Rating Scale and the Clinical Global Impression-Schizophrenia scale? A retrospective analysis

Table 1 Results of stepwise regression 1.

Variable	Unstandardized β	Standard Error	Standardized β	t	p-Value	95% Confidence Interval
Somatic concern	-0.253525**	0.078032	-0.171	-3.249	0.001	-0.407828 - -0.099222
Anxiety	0.413167^†	0.082008	0.411	5.038	0.000	0.251002 - 0.575332
Emotional withdrawal	-0.351087**	0.106518	-0.324	-3.296	0.001	-0.561719 - -0.140454
Conceptual disorganization	0.358483^†	0.069136	0.353	5.185	0.000	0.221771 - 0.495195
Grandiosity	-0.189250*	0.088471	-0.099	-2.139	0.034	-0.364195 - -0.014304
Hostility	0.166995	0.104009	0.140	1.606	0.111	-0.038676 - 0.372666
Suspiciousness	-0.152787	0.091570	-0.164	-1.669	0.097	-0.333861 - 0.028287
Hallucinations	0.162475**	0.057716	0.204	2.815	0.006	0.048346 - 0.276605
Motor retardation	0.258352**	0.090433	0.190	2.857	0.005	0.079527 - 0.437178
Uncooperativeness	0.262802*	0.109879	0.239	2.392	0.018	0.045524 - 0.480081
Unusual thought content	0.147787*	0.073080	0.162	2.022	0.045	0.003277 - 0.292296
Blunted affect	0.139060	0.079696	0.095	1.745	0.083	-0.018534 - 0.296652
Constant	1.138607	0.256029		4.447	0.000	0.632328 - 1.644886

*p < 0.05, **p < 0.01, ^†p < 0.001
Results of backward stepwise regression using the full set of variables of the BPRS. Eight items of the BPRS as independent variables were positively associated with the CGI-SCH score as a dependent variable, and four items were inversely associated with the CGI-SCH score. F-value < 2.000 as a criterion for removal (p < 0.001). R-squared was 0.7524 (p value of analysis of variance was less than 0.001), unstandardized β, standardized β, and the p value are shown.
Data for schizophrenic patients (n = 150)

ISSN: 1471-244X