ABSTRACT
Several scales have been used to diagnose and evaluate depression in schizophrenia. However, the association between different depression scales and between depression scales and negative symptoms has not been studied adequately. Sixty-four consecutively admitted schizophrenic patients to Eginition Hospital, Department of Psychiatry, Athens, were assessed on the following scales: the Calgary Depression Scale for Schizophrenia (CDSS), the Hamilton Depression Rating Scale (HDRS), the Expanded Brief Psychiatric Rating Scale-Depression subscale (EBPRS-D), the Positive and Negative Syndrome Scale-Depression subscale (PANSS-D) and the Negative Symptoms subscale (PANSS-N). The depression scales were found to be highly intercorrelated with the exception of the comparison between the EBPRS-D and the PANSS-D. Out of the four depression scales studied, only CDSS and EBPRS-D can discriminate between depression and a PANSS-Negative Symptoms subscale score or negative item scores.
Subject(s)
Depressive Disorder/diagnosis , Psychiatric Status Rating Scales , Psychometrics/methods , Schizophrenia/complications , Schizophrenic Psychology , Adult , Depressive Disorder/complications , Diagnosis, Differential , Female , Greece , Humans , Inpatients/psychology , Male , Reproducibility of ResultsABSTRACT
The aim of this study was to evaluate the reliability and validity, as well as the specificity, of the Greek version of the Calgary Depression Scale for Schizophrenia (CDSS). Schizophrenic inpatients consecutively admitted at the Eginition Hospital, University of Athens, were included in the study. Patients were assessed on admission using the CDSS, the Hamilton Depression Rating Scale (HDRS), the Positive and Negative Syndrome Scale (PANSS), the Rating Scale for Extrapyramidal Side Effects (RSESE), the Rating Scale for Drug-Induced Akathisia (RSDIA) and the Abnormal Involuntary Movement Scale (AIMS). The CDSS was found to have a high inter-rater reliability, as well as test-retest reliability or split-half reliability. The internal consistency of the CDSS was good (a=0.87). There were positive correlations between the CDSS and the HDRS, or the depression cluster of the PANSS. The mean score on the CDSS showed no significant correlations with that of the PANSS negative subscale (r=0.123); a negative but not significant correlation with that of the PANSS positive subscale (r=-0.036); a weak correlation with that of the PANSS general psychopathology subscale (r=0.218); and no significant correlations with that of the RSESE (r=0.197), the RSDIA (r=0.160) or the AIMS (r=0.031). Our results give further support to the reliability, the validity, and the specificity of the CDSS.
Subject(s)
Cross-Cultural Comparison , Depressive Disorder/diagnosis , Psychiatric Status Rating Scales/statistics & numerical data , Schizophrenia/diagnosis , Schizophrenic Psychology , Adult , Depressive Disorder/psychology , Female , Greece , Humans , Male , Psychometrics , Reproducibility of ResultsABSTRACT
This is the first report of two partners in a folie à deux situation manifesting identical Capgras delusions. It is postulated that the Capgras syndrome developed as a result of interaction between a dominant patient with primarily paranoid psychopathology and a submissive one with primarily organic dysfunction. The submissive "neuro-organic" partner experienced a non-delusional misidentification that acquired a delusional component and developed into the Capgras syndrome as a result of elaboration by the dominant paranoid partner, who subsequently "imposed" the Capgras delusion on the submissive partner. The submissive patient, and, to a lesser extent the dominant patient, had evidence of organic cerebral dysfunction.
