Internet-delivered cognitive behavioral therapy for adolescents with insomnia: Feasibility and preliminary efficacy.

Background: Insomnia is common in adolescents. This study evaluated feasibility and preliminary efficacy of a six-week internet-delivered cognitive-behavioral therapy for insomnia (ICBT-I) in adolescents. Methods: In this uncontrolled pilot study, participants (n = 27, 78% female) completed assessments pre- and post intervention. Data on recruitment, adherence to treatment, treatment activity, satisfaction and credibility was collected to assess feasibility. Self-reported insomnia symptoms, sleep parameters as well as depression, anxiety and daytime function were also assessed. Results: Participants showed good adherence to treatment and found the intervention overall credible and satisfactory. From pre- to post-assessment, statistically significant improvements were found for insomnia symptoms (p <.001; d = 1.02), sleep onset latency (p <.001; d =.39), wake after sleep onset (p =.001; d =.34), sleep efficiency (p <.001; d =.5) and depression (p =.01, d =.37). Changes in scores of total sleep time, generalized anxiety, daytime sleepiness and functional disability were not significant. Conclusions: The present study indicates that ICBT-I is well accepted by adolescents, that insomnia symptoms and sleep parameters can improve following the intervention, and that co-morbid symptoms of depression can be reduced. Due to the limited sample size and the uncontrolled design, the suggested results need to be replicated in well-powered controlled clinical trials. [ABSTRACT FROM AUTHOR]