Evidence map›Paper›PMID 40557787›Full record

Trial reportJournal of sleep research2026

The Effect of Digital Cognitive Behavioural Therapy for Insomnia in People With Co-Morbid Insomnia and Sleep Apnoea (COMISA): A Pilot Randomised Controlled Trial.

Alexander Sweetman, Cele Richardson, Allan Smith, Chelsea Reynolds

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of sleep research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Alexander SweetmanAdelaide Institute for Sleep Health and Flinders Health and Medical Research Institute: Sleep Health, College of Medicine and Public Health, Flinders University, Adelaide, Australia.
Cele RichardsonSchool of Psychological Science, University of Western Australia, Perth, Australia.ORCID 0000-0001-9425-2337
Allan SmithConsumer Representative.
Chelsea ReynoldsCollege of Education, Psychology and Social Work, Flinders University, Adelaide, Australia.ORCID 0000-0002-5604-6388

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Co-morbid insomnia and sleep apnoea (COMISA) is a prevalent and debilitating condition. Cognitive behavioural therapy for insomnia (CBTi) is an effective but largely inaccessible treatment in patients with COMISA. We aimed to test a self-guided interactive digital CBTi program tailored for COMISA and insomnia alone. A pilot randomised controlled trial was conducted to investigate the effect of an interactive tailored digital CBTi program, versus digital sleep education (control) on symptoms of insomnia, depression, anxiety, sleepiness, fatigue, and maladaptive beliefs about sleep in people with COMISA. Online questionnaires were administered at baseline, 8 weeks, 16 weeks, and 24 weeks. Intent-to-treat mixed models and complete-case Fisher's exact analyses were used. Participants were 30 adults with COMISA (Age M[sd] = 61.0[10.3], 60% female, BMI = 33.5[6.5]). Compared to control, CBTi was associated with lower insomnia (M[95% CI] difference = 8.3[5.0-11.6], p < 0.001, d = 2.88), depression (3.7[1.0-6.5], p = 0.008, d = 1.66), anxiety (2.9[0.9-4.9], p = 0.005, d = 0.62), sleepiness (2.7[0.8-4.5], p = 0.007, d = 0.71), and maladaptive beliefs about sleep (13.9[5.7-22.2], p = 0.001, d = 1.16), but not fatigue (1.9[-1.2-4.9], p = 0.229, d = 0.68) at 8-week follow-up, controlling for baseline scores. The CBTi group experienced greater rates of insomnia remission (ISI < 8; 42%, vs. 0%, p = 0.012), and improvement (ISI reduction ≥ 6; 75% vs. 14%; p = 0.004) by 8-weeks. Improvements in the CBTi group were sustained by 24-weeks. This tailored digital CBTi program led to large and sustained improvements in insomnia, depression, anxiety, sleepiness, and maladaptive beliefs about sleep in people with COMISA. Trial Registration: This trial was prospectively registered on the Australian and New Zealand Clinical Trials Registry (ANZCTR, ACTRN12622001218785). https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=384648&isReview=true.

Indexed as

Cognitive Behavioral TherapySleep Apnea SyndromesSleep Initiation and Maintenance DisordersAgedAnxietyComorbidityDepressionFemaleHumansMaleMiddle AgedPilot ProjectsSurveys and QuestionnairesTreatment OutcomeCOMISAdCBTidifficulties initiating and maintaining sleepDIMSOSAsleep disordered breathing

Identifiers

PMID40557787
PMCPMC12856122

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.