Skalenkonstruktion der deutschsprachigen Version der Comprehensive Psychopathological Rating Scale (CPRS)

Abstract

170 hospitalised patients (96 schizophrenic, 71 depressive, and 3 manic) were examined using the German version of the CPRS. Based on factor analytical results four subscales (‘manic syndrome’, ‘schizophrenic syndrome’, ‘depressive syndrome’, and ‘side-effects’) and two second-order scales (‘manic-depressive syndrome’ and ‘schizophrenic syndrome’) were constructed. The first three subscales show a good reliability. The fourth subscale (‘side-effects’) has an unsufficient internal consistency, mainly due to the small number of items (6). The two subscales ‘schizophrenic syndrome’ and ‘depressive syndrome’ and the two second-order scales can differentiate very well between schizophrenic and depressive syndromes. The validity of the first and fourth subscale could not be examined in this study.

Scale Construction of the Swedish CPRS Version

“…We therefore attempted to reproduce the CPRS syn dromes that had been developed in a German-speaking area in a predominantly schizophrenic and depressive patient sample examined in Sweden. Hence, the dimen sion analytical procedure for scale acquirement is in line with the approach described by Maurer et al [1982],…”

“…The sample of Maurer et al [ 1982], on the other hand, consisted of 96 schizophrenic, 71 depressive and 3 manic patients; 97 were female and 73 male, mean age 40.1 years (SD 15.1; range 15-77 years). The Swedish sample has more depressive patients, though nearly identical in age and gender.…”

“…The first step was the elimination of characteristics which had been re corded in less than 10% of the patients. Table I lists these rare symptoms, comparing the Stockholm and Zurich [Maurer et al, 1982] ratings. Table 1 shows that the 2 samples differ highly in the frequency of certain symptoms.…”

“…Phobias, rituals and labile emotional responses are more frequent in Stockholm, while elation, hostility, increased sleep, distractability, flight of ideas, overactiv ity and involuntary movements are significantly more rare. In our sample, 10 symptoms which Maurer et al [1982] included in dimension analysis have to be ex cluded. In the course of the further evaluations it will become manifest whether these differences, pointing to Total number of excluded symptoms 15 9…”

Comparison of the AMP System and the CPRS with Regard to Interrater Reliability

“…In studies dealing with pharmacological or other ther apeutic outcome mainly syndromes are used as depen dent variables. Therefore, we were also interested in a comparison between AMP and CPRS syndromes with regard to interrater agreement [concerning the construc tion of AMP and CPRS syndromes see Baumann, 1974;Woggon and Dittrich, 1979;Maurer et al, 1982],…”