The Short-Term Efficacy of an Unguided Internet-Based Cognitive-Behavioral Therapy for Insomnia: A Randomized Controlled Trial With a Six-Month Nonrandomized Follow-Up

Mar 28, 2017Behavioral sleep medicine

Short-Term Effects of Self-Guided Online Cognitive-Behavioral Therapy for Insomnia with Six-Month Follow-Up

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Abstract

In a study of 181 participants, the unguided Internet-based cognitive-behavioral treatment program for insomnia, SHUTi, resulted in significant decreases in insomnia severity as measured by the Insomnia Severity Index (ISI) and the Bergen Insomnia Scale (BIS).

Participants in the SHUTi group experienced a significant reduction in insomnia severity, with an effect size of -1.77 for the ISI and -1.00 for the BIS.
Improvements in sleep measures were observed shortly after the nine-week intervention.
Benefits were maintained at a six-month follow-up for participants who completed the SHUTi program.
Dropout attrition was notably high, impacting the generalizability of the findings.

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OBJECTIVE: Insomnia is a major health problem, and the need for effective and accessible treatment is urgent. The aim of the current study was to evaluate the short-term efficacy of an unguided Internet-based cognitive-behavioral treatment program for insomnia (CBTi), called SHUTi (Sleep Healthy Using the Internet).

METHODS: This study used a parallel arm randomized controlled trial in Norway. Participants were randomly allocated to the SHUTi condition or a Web-based patient education condition. Both groups were assessed before and after the nine-week intervention period (online sleep diaries and questionnaires). The SHUTi participants were reassessed in a six-month nonrandomized follow-up. Primary outcome measures were the Insomnia Severity Index (ISI) and the Bergen Insomnia Scale (BIS).

RESULTS: A total of 181 participants were included in the study; SHUTi condition (n = 95), patient education condition (n = 86). Intention-to-treat mixed-model repeated-measures analysis revealed that the SHUTi group had better short-term outcomes compared with the patient education group on most sleep measures. The SHUTi group showed a significant decrease on the primary outcomes, the ISI (d= -1.77, 95% CI = -2.23, -1.31) and the BIS (d= -1.00, 95% CI = -1.32, -.68). Improvements were maintained among the completing SHUTi participants at the six-month nonrandomized follow-up. However, dropout attrition was high. between between

CONCLUSION: Unguided Internet-based CBTi produced significant short-term improvements in sleep in patients with chronic insomnia. This highlights the benefits of making Internet-delivered CBTi programs available as a standard first-line treatment option in public health services. Nevertheless, the rate of dropout attrition (participants not completing post-assessment) in this trial limits the generalizability of the findings.

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The Short-Term Efficacy of an Unguided Internet-Based Cognitive-Behavioral Therapy for Insomnia: A Randomized Controlled Trial With a Six-Month Nonrandomized Follow-Up

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