Evidence map›Paper›PMID 35404226›Full record

Trial reportJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2022

Does total sleep time substantially increase after cognitive behavioral therapy for insomnia?

Hannah Scott, Janet M Y Cheung, Alexandria Muench, Hans Ivers, Michael A Grandner, Leon Lack, Charles M Morin, Michael Perlis

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 3 pooled it
4.8field-weighted citation impact, top 5% of its field
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

13 citing papers in PubMed, 3 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. The effects of cognitive behavioral therapy for insomnia in patients with cardiovascular disease: a systematic review and meta-analysis.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Early time-restricted eating advances sleep in late sleepers: a pilot randomized controlled trial.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2023
    Trial
  7. Trial
  8. Trial
  9. Article
  10. Cognitive and behavioral therapies for insomnia: must they always be in bed together?Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Article
  11. Article
  12. Review
  13. Patience required: increasing sleep duration in the months to years following CBT-I.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 3 countries.

Hannah ScottAdelaide Institute for Sleep Health: A Flinders Centre of Research Excellence, College of Medicine and Public Health, Flinders University, Adelaide, Australia.
Janet M Y CheungSchool of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.
Alexandria MuenchDepartment of Psychiatry, University of Pennsylvania, Philadelphia, Pennsylvania.
Hans IversSchool of Psychology and BRAIN Research Center, Université Laval, Quebec City, Canada.
Michael A GrandnerDepartment of Psychiatry, University of Arizona, Tucson, Arizona.
Leon LackAdelaide Institute for Sleep Health: A Flinders Centre of Research Excellence, College of Medicine and Public Health, Flinders University, Adelaide, Australia.
Charles M MorinSchool of Psychology and BRAIN Research Center, Université Laval, Quebec City, Canada.
Michael PerlisDepartment of Psychiatry, University of Pennsylvania, Philadelphia, Pennsylvania.
Adelaide Institute for Sleep Health · AUUniversité Laval · CAUniversity of Pennsylvania · USUniversity of Arizona · USUniversity of Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesIn most standardized approaches to cognitive behavioral therapy for insomnia, it is commonly the case that total wake time is reduced substantially during sleep restriction, but self-reported total sleep time (TST) is minimally affected. By follow-up, however, TST increases by almost 1 hour on average. A secondary analysis was undertaken to assess what percentage of participants meet or appreciably exceed baseline TST after cognitive behavioral therapy for insomnia.

methodsData were drawn from a randomized controlled trial assessing acute and maintenance therapies for chronic insomnia (n = 80). The present analyses assessed the percentage of participants that 1) reached (≥ 0 minute increase) and 2) appreciably exceeded (≥ 30 minutes increase) baseline TST as assessed via daily sleep diaries at posttreatment and 3, 6, 12, and 24 months following treatment.

resultsBy the end of acute treatment, 45% of participants reached or exceeded baseline TST. By 24 months follow-up, this percentage had increased to 86%. Only 17% of participants achieved a 30-minute increase in TST by the end of acute treatment, and this proportion only increased to 58% over time.

conclusionsThese findings suggest that cognitive behavioral therapy for insomnia in its current form does not appreciably increase self-reported TST in a significant proportion of patients with insomnia. Whether participants would benefit from further increases in TST warrants investigation. The further titration of sleep opportunity may be useful to accelerate increases in TST, to extend the effect to a larger subset of patients, and/or to increase the magnitude of the TST gain. CITATION: Scott H, Cheung JMY, Muench A, et al. Does total sleep time substantially increase after cognitive behavioral therapy for insomnia?

Indexed as

Cognitive Behavioral TherapySleep Initiation and Maintenance DisordersHumansPolysomnographySleepTreatment Outcomecognitive behavioral therapy for insomniainsomniasleep opportunitysleep restrictiontotal sleep time

Identifiers

PMID35404226
PMCPMC9243283
OpenAlexW4223591975

What OpenQuestion holds

Textmetadata
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.