Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-35340
Mueller-Pfeiffer, C; Schumacher, S; Martin-Soelch, C; Pazhenkottil, A P; Wirtz, G; Fuhrhans, C; Hindermann, E; Assaloni, H; Briner, D P; Rufer, M (2010). The validity and reliability of the German version of the Somatoform Dissociation Questionnaire (SDQ-20). Journal of Trauma & Dissociation, 11(3):337-357.
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The present study investigated the validity of the German version of the Somatoform Dissociation Questionnaire (SDQ-20), a scale designed to measure somatoform dissociative symptoms. Somatoform dissociation involves physical manifestations of a dissociation of the personality and is considered a unique entity in the phenomenological spectrum of dissociation. The validity and reliability of the German version of the SDQ-20 was examined using a sample of 225 patients with (n = 39) and without dissociative disorders who were recruited from several in- and outpatient psychiatric clinics. Patients were assessed using structured diagnostic interviews; diagnostic checklists; and self-rating scales for dissociation, and posttraumatic stress. Patients with dissociative disorders reported significantly more (p < .001) somatoform dissociative symptoms than patients without dissociative disorders (criterion validity). Significant correlations (p < .001) were found between scores of somatoform dissociation, psychoform dissociation, posttraumatic stress symptoms, and traumatic childhood experiences (construct validity). Reliability was corroborated by a Cronbach's alpha coefficient of .91 and a test-retest correlation of .89. A component factor analysis suggested unidimensionality of the SDQ-20. In conclusion, the psychometric properties and cross-cultural validity of the German version of the SDQ-20 are excellent. Our results form the basis for the further study of somatoform dissociation in German-speaking populations.
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||04 Faculty of Medicine > University Hospital Zurich > Clinic for Psychiatry and Psychotherapy|
|DDC:||610 Medicine & health|
|Deposited On:||09 Aug 2010 10:06|
|Last Modified:||23 Nov 2012 17:04|
|Publisher:||Taylor & Francis|
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