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dc.contributor.authorHagatun, Susanne
dc.contributor.authorVedaa, Øystein
dc.contributor.authorHarvey, Allison G.
dc.contributor.authorNordgreen, Tine
dc.contributor.authorSmith, Otto Robert Frans
dc.contributor.authorPallesen, Ståle
dc.contributor.authorHavik, Odd E.
dc.contributor.authorThorndike, Frances P.
dc.contributor.authorRitterband, Lee M.
dc.contributor.authorSivertsen, Børge
dc.PublishedHagatun S, Vedaa Ø, Harvey AG, Nordgreen T, Smith ORF, Pallesen S, Havik OE, Thorndike, Ritterband, Sivertsen BS. Internet-delivered cognitive-behavioral therapy for insomnia and comorbid symptoms. Internet Interventions. 2018;12:11-15eng
dc.description.abstractBackground: Cognitive-behavioral therapy for insomnia (CBTi) is considered the standard treatment. The internet has proven to be a useful and successful tool of providing CBTi. However, few studies have investigated the possible effect of unguided internet-delivered CBTi (ICBTi) on comorbid psychological symptoms and fatigue. Methods: Based on a randomized controlled trial, we investigated whether unguided ICBTi had an effect on comorbid psychological symptoms. Adults with insomnia (n = 181; 67% women; mean age 44.9 years [SD 13.0]) were randomized to ICBTi (n = 95) or to an online patient education condition (n = 86) for a nine-week period. Results: The results from mixed linear modelling yielded medium to large between-group effect sizes from pre- to post-treatment for symptoms of anxiety or depression(d = −0.57; 95% CI = 0.79–0.35) and fatigue (d = 0.92; 95% CI = 1.22–0.62). The ICBTi group was reassessed at a 6-month non-randomized follow-up, and the completing participants had on the average a significant increase (from the post-assessment) on symptoms of anxiety or depression, while the reduction in symptoms of fatigue (on post-assessment) was maintained. However, due to high dropout attrition and no control group data, caution should be made regarding the long-term effects. In conclusion, the present findings show that unguided ICBTi positively influence comorbid symptoms in the short-term, thereby emphasizing the clinical relevance of unguided ICBTi.en_US
dc.rightsAttribution CC BY-NC-NDeng
dc.subjectCognitive-behavioral therapy for insomniaeng
dc.subjectInternet-based interventioneng
dc.titleInternet-delivered cognitive-behavioral therapy for insomnia and comorbid symptomseng
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2018 The Author(s)eng
dc.source.journalInternet Interventions
dc.relation.projectNorges forskningsråd: 259293

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