Long-Term Effects of an Unguided Online Cognitive Behavioral Therapy for Chronic Insomnia.

The aim of this study was to test the efficacy of fully automated Internet-delivered cognitive behavioral therapy for insomnia (CBT-I) 18 months after the intervention period on sleep, daytime functioning, and beliefs about sleep for adults with chronic insomnia. Participants in this study had participated in a randomized controlled trial comparing the efficacy of unguided Internet CBT-I with web-based patient education. Participants who had received Internet CBT-I (n = 95) completed online questionnaires and online sleep diaries 18 months after the intervention period. We used linear mixed models to study changes from baseline to postassessment and to 18-month follow-up, and a separate mixed-models analysis to study changes from postassessment to 18-month follow-up. Mean age of the participants was 45.5 years (standard deviation = 12.6) and 64% were females. Sixty-six participants (70%) completed the 18-month follow-up assessment. There were significant improvements from baseline to 18-month follow-up on the Insomnia Severity Index (ISI) (Cohen d = 2.04 [95% confidence interval (CI) 1.66-2.42]) and the Bergen Insomnia Scale (BIS) (d = 1.64 [95% CI 1.30-1.98]), levels of daytime fatigue (d = 0.85 [95% CI 0.59-1.11]), psychological distress (d = 0.51 [95% CI 0.29-0.73]), and beliefs about sleep (d = 1.44 [95% CI 1.15-1.73]). Moderate to large effect size improvements were also shown on the diary-derived sleep variables. All improvements from baseline to postassessment were essentially maintained to 18-month follow-up. Unguided Internet CBT-I appears to have sustained effects on sleep, daytime functioning, and beliefs about sleep up to 18 months after the intervention period. This study presents long-term follow-up data of a previous clinical trial. Registry: ClinicalTrials.gov, Title: Internet-based Treatment for Insomnia in Norway, Identifier: NCT02261272, URL: https://clinicaltrials.gov/ct2/show/NCT02261272.

Vedaa Ø ，Hagatun S ，Kallestad H ，Pallesen S ，Smith ORF ，Thorndike FP ，Ritterband LM ，Sivertsen B ... -  《-》

Effect of a Web-Based Cognitive Behavior Therapy for Insomnia Intervention With 1-Year Follow-up: A Randomized Clinical Trial.

Ritterband LM ，Thorndike FP ，Ingersoll KS ，Lord HR ，Gonder-Frederick L ，Frederick C ，Quigg MS ，Cohn WF ，Morin CM ... -  《-》

Short and long-term effects of unguided internet-based cognitive behavioral therapy for chronic insomnia in morning and evening persons: a post-hoc analysis.

Lien M ，Bredeli E ，Sivertsen B ，Kallestad H ，Pallesen S ，Smith ORF ，Faaland P ，Ritterband LM ，Thorndike FP ，Vedaa Ø ... -  《-》

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.

Hagatun S ，Vedaa Ø ，Nordgreen T ，Smith ORF ，Pallesen S ，Havik OE ，Bjorvatn B ，Thorndike FP ，Ritterband LM ，Sivertsen B ... -  《-》

A randomized, placebo-controlled trial of online cognitive behavioral therapy for chronic insomnia disorder delivered via an automated media-rich web application.

Espie CA ，Kyle SD ，Williams C ，Ong JC ，Douglas NJ ，Hames P ，Brown JS ... -  《-》