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

Table 3 Results of multivariate regression.

Variable	Multiple Regression Coefficient	Standard Error	t	p-Value	95% Confidence Interval
Conceptual disorganization	0.325896^†	0.071154	4.580	0.000	0.185228 - 0.466563
Hostility	0.103284	0.080584	1.282	0.202	-0.056024 - 0.262592
Hallucinations	0.139101*	0.059103	2.354	0.020	0.022258 - 0.255944
Emotional withdrawal	-0.312958**	0.109653	-2.854	0.005	-0.529734 - -0.096182
Anxiety	0.235261**	0.068236	3.448	0.001	0.100363 - 0.370158
Motor retardation	0.297271**	0.086420	3.440	0.001	0.126424 - 0.468118
Uncooperativeness	0.300436**	0.111556	2.693	0.008	0.079897 - 0.520976
Unusual thought content	0.095707	0.072111	1.327	0.187	-0.046852 - 0.238266
Constant	1.093726	0.193951	5.639	0.000	0.710298 - 1.477155

*p < 0.05, **p < 0.01, ^†p < 0.001
Relative weights of the variables (which were selected as being positively and significantly associated with the CGI-SCH score with the p value < 0.05 in Table 2) are presented as a set of magnitudes of multiple regression coefficients (p < 0.001). R-squared was 0.7198 (the subset of eight items resulted from stepwise regression using three small sets) and p value of analysis of variance was less than 0.001.
Data for schizophrenic patients (n = 150)

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