![]() DP is characterized by an alteration in the experience of the self, so that one feels detached from his or her own mental processes or body (or from the world), feeling as being an outside observer of his or her own self, and loosing the experience of unity and identity (American Psychiatric Association, 2013 ). ![]() " Depersonalization" (DP) is a common symptom in the general population and psychiatric patients (Michal et al., 2011 ). The best cut-off point, when we use this for distinguishing individuals with depersonalization disorder from individuals without psychiatric disorders, is 60 points.ĭepersonalization: An exploratory factor analysis of the Italian version of the Cambridge Depersonalization Scale.įagioli, F Telesforo, L Dell'Erba, A Consolazione, M Migliorini, V Patanè, M Boldrini, T Graziani, R Nicoletti, F Fiori-Nastro, P In this study, J-CDS showed good reliability and validity. The best compromise between the true positive and false negative rate was at a cut-off point of 60, yielding a sensitivity of 1.00 and a specificity of 0.96. The J-CDS score was significantly correlated with scores of total DES, and DES- depersonalization. The J-CDS score in the depersonalization group was significantly higher than in the healthy control group. Cronbach's alpha and split-half reliability were 0.94 and 0.93, respectively. Questionnaires that were composed of J-CDS, the Dissociative Experience Scale (DES), the Zung self-rating scale and the Maudsley Obsessional-Compulsive Inventory were administrated to 59 participants (12 patients with depersonalization disorder, 11 individuals who had recovered from depersonalization and 36 healthy controls). After making the J-CDS, we examined its reliability and validity. The CDS was translated from English into Japanese and then back-translated into English by a native English-speaking American. The purposes of this study were to develop a Japanese version of the CDS (J-CDS) and to examine its reliability and validity as an instrument for screening depersonalization disorder under non-clinical conditions. The Cambridge Depersonalization Scale (CDS) is an instrument that has obtained reliability and validity in some countries for use in detecting depersonalization disorder under clinical conditions, but not yet in Japan under non-psychiatric conditions. Sugiura, Miyuki Hirosawa, Masataka Tanaka, Sumio Nishi, Yasunobu Yamada, Yasuyuki Mizuno, Motoki Reliability and validity of a Japanese version of the Cambridge depersonalization scale as a screening instrument for depersonalization disorder. Therefore the CDS-2 can be considered as a useful tool for screening and identification of DP-DR. The CDS-2 was able to differentiate patients with clinical significant DP well from other groups (cut-off of CDS-2>or=3, sensitivity=78.9%, specifity=85.7%) and also showed high reliability (Cronbachs alpha=0.92). ![]() Scores were compared against clinical diagnoses based on a structured interview (gold standard). This short version (CDS-2) was tested in a sample of 38 patients with clinical significant DP-DR and 49 patients without or only mild DP-DR. These two Items were assembled to a short version of the CDS. ![]() From the Cambridge Depersonalization Scale (CDS) two items were extracted discriminating best patients with clinical significant DP from patients without DP. Therefore the development of screening instruments is important. ![]() Michal, Matthias Zwerenz, Rüdiger Tschan, Regine Edinger, Jens Lichy, Marcel Knebel, A Tuin, Inka Beutel, Manfredĭepersonalization (DP) and derealization (DR) are considered to be highly underdiagnosed. ![]()
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