ArticleInternet interventions2026
Smartphone-delivered cognitive behavioral therapy for insomnia: A preliminary randomized controlled trial.
Article in Internet interventions, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
6 authors.
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Abstract
Study objectives: Cognitive behavioral therapy for insomnia (CBT-I) is the first-line treatment for insomnia, but many individuals lack access. This study evaluated the preliminary efficacy of Hvil®, a 9-week, fully automated, smartphone delivered eCBT-I program, in reducing insomnia severity. Methods: Adults with insomnia (Insomnia Severity Index ≥10) were randomly assigned to an eCBT-I intervention via Hvil® or to a waitlist control group. The primary outcome of insomnia severity was assessed at baseline, weekly during the intervention, and post-intervention. Secondary outcomes included fatigue at baseline and post-intervention and sleep diary-based outcomes assessed daily during the study period. Mixed linear models (MLMs) based on the intent-to-treat sample were used to assess group differences over time. Moderating effects of demographic characteristics and adherence were explored. Results: A total of 165 participants were randomized to the intervention ( Conclusions: Hvil®, an automated eCBT-I intervention, demonstrated significant efficacy in reducing insomnia severity among adults in the general population. While attrition was substantial, the results suggest its potential as a scalable, accessible intervention.
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