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September 19, 2025Open Access

The effectiveness of digital CBT to treat insomnia in a diverse sample with insomnia disorder: A decentralized randomized controlled trial (Preprint)

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Decentralized randomized controlled trial shows digital CBT-I improves insomnia severity compared to sleep hygiene education.

Digital CBT-I significantly reduced insomnia severity with sustained effects at follow-up assessments.
At post-treatment, improvements on the insomnia severity index were d=0.60, indicating notable effectiveness.
Participants in the trial were 336 adults across the U.S. with insomnia disorder, using structured clinical interviews for diagnosis.
Findings underscore the need for wider availability of digital CBT-I to enhance access to effective insomnia treatments.

Prather et al. (2025) studied this question.

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