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A 5-Year Follow-up of Internet-Based Cognitive Behavior Therapy for Social Anxiety Disorder
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Psychology.
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2011 (English)In: Journal of Medical Internet Research, ISSN 1438-8871, E-ISSN 1438-8871, Vol. 13, no 2, e39- p.Article in journal (Refereed) Published
Abstract [en]

Background: Internet-based cognitive behavior therapy (CBT) has been shown to be a promising method to disseminate cognitive behavior therapy for social anxiety disorder (SAD). Several trials have demonstrated that Internet-based CBT can be effective for SAD in the shorter term. However, the long-term effects of Internet-based CBT for SAD are less well known. Objective: Our objective was to investigate the effect of Internet-based CBT for SAD 5 years after completed treatment. Method: We conducted a 5-year follow-up study of 80 persons with SAD who had undergone Internet-based CBT. The assessment comprised a diagnostic interview and self-report questionnaires. The main outcome measure was the Liebowitz Social Anxiety Scale-Self-Report (LSAS-SR). Additional measures of social anxiety were the Social Interaction Anxiety Scale (SIAS) and the Social Phobia Scale (SPS). Attrition rates were low: 89% (71/80) of the participants completed the diagnostic interview and 80% (64/80) responded to the questionnaires. Results: Mixed-effect models analysis showed a significant effect of time on the three social anxiety measures, LSAS-SR, SIAS, and SPS (F(3,98-102) = 16.05 -29.20, P < .001) indicating improvement. From baseline to 5-year follow-up, participants' mean scores on the LSAS-SR were reduced from 71.3 (95% confidence interval [CI] 66.1-76.5) to 40.3 (95% CI 35.2 - 45.3). The effect sizes of the LSAS-SR were large (Cohen's d range 1.30 - 1.40, 95% CI 0.77 - 1.90). Improvements gained at the 1-year follow-up were sustained 5 years after completed treatment. Conclusions: Internet-based CBT for SAD is a treatment that can result in large and enduring effects.

Place, publisher, year, edition, pages
2011. Vol. 13, no 2, e39- p.
Keyword [en]
Internet, cognitive behavior therapy, anxiety disorders, social anxiety disorder, 5-year follow-up
Identifiers
URN: urn:nbn:se:uu:diva-158191DOI: 10.2196/jmir.1776ISI: 000293833500002OAI: oai:DiVA.org:uu-158191DiVA: diva2:438176
Available from: 2011-09-01 Created: 2011-09-01 Last updated: 2017-12-08Bibliographically approved

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