Reliability and validity study of the French-language version of the SCID-D semi-structured clinical interview for diagnosing DSM-5 and ICD-11 dissociative disorders

Abstract

This paper presents the validation and inter-rater reliability study of the French translation of the new edition of the SCID-D, a semi-structured clinical interview for evaluating dissociative symptoms and diagnosing dissociative disorders based upon DSM-5 and ICD-11 criteria. The SCID-D evaluates five core dimensions of dissociation: amnesia, depersonalization, derealization, identity confusion and identity alteration. The SCID-D was administered to 20 subjects with a dissociative disorder, 19 subjects with a nondissociative psychiatric disorder, and 10 healthy control subjects. Results indicate that there was 96% agreement among raters on the SCID-D's ability to differentiate subjects with a dissociative disorder from subject with no dissociative disorder. The statistical analysis indicates that the overall diagnosis, the scores for each of the five dimensions, and the total SCID-D scores were homogenous amongst raters. The results indicate good to excellent inter-rater reliability. The SCID-D could efficiently discriminate dissociative subjects from nondissociative ones. Convergent validity was tested with the use of the Somatoform Dissociation Questionnaire SDQ-20 and the Dissociation Questionnaire DIS-Q. Correlation between the scores from these questionnaires and the SCID-D total score is high. The French translation of the SCID-D has good to excellent reliability, discriminant and convergent validity, and is similar to previous research of DSM-III and DSM-IV versions of the SCID-D in different languages. The SCID-D is a useful instrument for the assessment of dissociative symptom severity and the diagnosis of DSM-5 and ICD-11 dissociative disorders.