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Somatoform dissociation among Swedish adolescents and young adults: The psychometric properties of the Swedish versions of the SDQ-20 and SDQ-5
Linköping University, Department of Behavioural Sciences and Learning, Psychology. Linköping University, Faculty of Arts and Sciences. Östergötlands Läns Landsting, Local Health Care Services in Central Östergötland, Department of Child and Adolescent Psychiatry in Linköping. (Trauma gruppen)
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Local Health Care Services in Central Östergötland, Department of Child and Adolescent Psychiatry in Linköping.
Linköping University, Department of Behavioural Sciences and Learning, Psychology. Linköping University, Faculty of Arts and Sciences. (Traumagruppen)
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Local Health Care Services in Central Östergötland, Department of Child and Adolescent Psychiatry in Linköping. (Child and Adolescent psychiatry)
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2015 (English)In: Nordic Journal of Psychiatry, ISSN 0803-9488, E-ISSN 1502-4725, Vol. 69, no 2, 152-160 p.Article in journal (Refereed) Published
Abstract [en]

Background: Somatoform dissociation is supposed to be a vital aspect of the general concept of dissociation. The Somatoform Dissociation Questionnaire-20 (SDQ-20) and the brief version SDQ-5 are self-report instruments constructed to identify somatic dissociation. Aim: In the present study, the psychometric qualities of the Swedish version of the SDQ-20 and its brief version, the SDQ-5, were examined among adolescents and young adults. Reliability and concurrent validity were investigated. Methods: A total of 512 adolescents and young adults participated in the study: 461 adolescents from a non-clinical sample and 50 adolescents and young adults from a clinical eating disorder outpatient unit. They completed the self-report instruments the SDQ-20, the SDQ-5 (part of SDQ-20), the Linköping Youth Life Experience Scale (LYLES, a trauma history scale) and the Dissociation Questionnaire-Sweden (Dis-Q-Sweden). Results: Both internal consistency and test-retest reliability of the Swedish version of SDQ-20 were good in both the non-clinical (α = 0.83) and the clinical groups (α = 0.84); the reliability for the SDQ-5 was, however, lower (non-clinical α = 0.50, clinical α = 0.64). Significant differences were found between the clinical and non-clinical groups on both somatoform and psychoform dissociation. Correlations between the Dis-Q-Sweden, SDQ-20 and SDQ-5 were generally high. The criterion and convergent validity was acceptable for both scales but somewhat better for SDQ-20 than for SDQ-5. Conclusion: The advantage with both the SDQ-20 and the SDQ-5 is that they are short questionnaires, but the results suggests that SDQ-20 is preferable based on the higher-quality psychometric properties of the SDQ-20.

Place, publisher, year, edition, pages
Informa Healthcare, 2015. Vol. 69, no 2, 152-160 p.
Keyword [en]
Adolescents; Psychometrics; Self-assessment; SDQ-20; Somatoform dissociation
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Other Medical Sciences not elsewhere specified
Identifiers
URN: urn:nbn:se:liu:diva-110440DOI: 10.3109/08039488.2014.949851ISI: 000346904900010PubMedID: 25142431OAI: oai:DiVA.org:liu-110440DiVA: diva2:745977
Available from: 2014-09-11 Created: 2014-09-11 Last updated: 2017-12-05

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Nilsson, DorisLejonclou, AnnikaSvedin, Carl GöranHolmqvist, Rolf

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PsychologyFaculty of Arts and SciencesDepartment of Child and Adolescent Psychiatry in LinköpingDivision of Neuro and Inflammation ScienceFaculty of Medicine and Health SciencesDepartment of Child and Adolescent Psychiatry in LinköpingDivision of Clinical SciencesFaculty of Health Sciences
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