Adaptation of the Russian version of the Somatoform Dissociation Questionnaire-5 (SDQ-5)

The Somatoform Dissociation Questionnaire-5 (SDQ-5) is a well-known instrument for assessing the sensorimotor traumatic experiences. Objective. The aim of this study was a psychometric analysis of the Russian version of the SDQ-5 on a sample from the general population and a sample of patients with eating disorders. Material and Methods. The data were collected in a sample from the general population (n = 587) and a sample of patients with eating disorders (n = 185). The main part of the questionnaire included measures for assessing somatoform dissociation, anxiety (Generalized Anxiety Disorder-7, GAD-7), depression (Patient Health Questionnaire-9, PHQ-9), somatization (Somatic Symptom Scale-8, SSS-8), and psychoform dissociation (Brief Dissociative Experiences Scale, DES-B). The variable part of the questionnaire contained measures for assessing adverse childhood experiences (Adverse Childhood Experiences Questionnaire, ACE) in a sample from the general population and dysmorphophobia (Body Dysmorphic Disorder-Dimensional Scale, BDD-D) in a sample of patients with eating disorders. Results. The factor validity and internal reliability of the adapted questionnaire were confirmed by the identification of one common factor of somatoform dissociation, which has adequate values of internal consistency. The convergent validity of the Russian version of the SDQ-5 has been proven by strong correlations of somatoform dissociation with anxiety, depression, somatization, and psychoform dissociation. The criterion validity of the adapted questionnaire was confirmed, on the one hand, by higher rates of somatoform dissociation in the sample of patients with eating disorders, on the other hand, by the relationships of somatoform dissociation with dysmorphophobia and adverse childhood experiences. Conclusion. The Russian version of the SDQ-5 is a psychometrically based questionnaire for the diagnosis of somatoform dissociation, which can be recommended for solving research tasks and for use in psychotherapy and psychological counseling for people with eating disorders.  

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