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Exposure-based cognitive-behavioural therapy via the internet and as bibliotherapy for somatic symptom disorder and illness anxiety disorder: randomised controlled trial
Stockholm University, Faculty of Social Sciences, Stress Research Institute. Karolinska Institutet, Sweden.
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2016 (English)In: British Journal of Psychiatry, ISSN 0007-1250, E-ISSN 1472-1465, Vol. 209, no 5, 407-413 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: In DSM-5 two new diagnoses, somatic symptom disorder (SSD) and illness anxiety disorder (IAD), have replaced DSM-IV hypochondriasis. There are no previous treatment studies for these disorders. Cognitive-behavioural therapy (CBT) delivered as therapist-guided or unguided internet treatment or as unguided bibliotherapy could be used to increase treatment accessibility.

AIMS: To investigate the effect of CBT delivered as guided internet treatment (ICBT), unguided internet treatment (U-ICBT) and as unguided bibliotherapy.

METHOD: A randomised controlled trial (RCT) where participants (n = 132) with a diagnosis of SSD or IAD were randomised to ICBT, U-ICBT, bibliotherapy or to a control condition on a waiting list (trial registration: identifier NCT01966705).

RESULTS: Compared with the control condition, all three treatment groups made large and significant improvements on the primary outcome Health Anxiety Inventory (between-group d at post-treatment was 0.80-1.27).

CONCLUSIONS: ICBT, U-ICBT and bibliotherapy can be highly effective in the treatment of SSD and IAD. This is the first study showing that these new DSM-5 disorders can be effectively treated.

Place, publisher, year, edition, pages
2016. Vol. 209, no 5, 407-413 p.
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URN: urn:nbn:se:su:diva-135644DOI: 10.1192/bjp.bp.116.181396ISI: 000387934500008PubMedID: 27491531Local ID: P-3374OAI: diva2:1047320
Available from: 2016-11-17 Created: 2016-11-17 Last updated: 2016-12-12Bibliographically approved

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Lekander, Mats
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