Dissociative Disorders and Other Psychopathological Groups: Exploring the Differences Through the Somatoform Dissociation Questionnaire (SDQ-20)

Revista Brasileira de Psiquiatria, 29(4), 354-358. DOI: 10.1590/S1516-44462006005000039

Posted: 15 Jul 2017

See all articles by Helena Espirito Santo

Helena Espirito Santo

Instituto Superior Miguel Torga; Universidade de Coimbra - Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo- Comportamental

Jose Pio-Abreu

Independent

Date Written: January 8, 2008

Abstract

The Somatoform Dissociation Questionnaire is a self-report questionnaire that has proven to be a reliable and valid instrument. The objectives of this study were to validate the Portuguese version and to determine its capability to distinguish patients with dissociative disorders from others with psychopathological disorders. 234 patients answered the translated version of Somatoform Dissociation Questionnaire. The Portuguese Dissociative Disorders Interview Schedule was used to validate clinical diagnosis. Patients with dissociative disorder (n = 113) were compared to a control group of 121 patients with various anxiety and depression disorders. Reliability measured by Cronbach's a was 0.88. The best performance of the Portuguese form was at a cut-off point of 35, which distinguishes between dissociative disorder and neurotic disorders with a good diagnostic efficacy (sensitivity = 0.73). The somatoform dissociation was significantly more frequent in dissociative disorder patients, conversion disorder patients and post-traumatic stress disorder patients. These findings suggest that dissociative disorders can be differentiated from other psychiatric disorders through somatoform dissociation. The Portuguese version of the Somatoform Dissociation Questionnaire has fine psychometric features that sustain its cross-cultural validity.

Keywords: Dissociative disorders, Somatoform Dissociation Questionnaire

Suggested Citation

Espirito Santo, Helena and Pio-Abreu, Jose, Dissociative Disorders and Other Psychopathological Groups: Exploring the Differences Through the Somatoform Dissociation Questionnaire (SDQ-20) (January 8, 2008). Revista Brasileira de Psiquiatria, 29(4), 354-358. DOI: 10.1590/S1516-44462006005000039, Available at SSRN: https://ssrn.com/abstract=2999140

Helena Espirito Santo (Contact Author)

Instituto Superior Miguel Torga ( email )

Largo da Cruz de Celas nº1
Coimbra, Coimbra 3000-132
Portugal
239404608 (Phone)

Universidade de Coimbra - Centro de Investigação do Núcleo de Estudos e Intervenção Cognitivo- Comportamental ( email )

Portugal

Jose Pio-Abreu

Independent ( email )

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