Trial reportJournal of sleep research2026
Is Objective Short Sleep a Proxy for Frequent Insomnia?
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 1 paper.
What it found
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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.
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.
Who cites it
1 citing paper in PubMed.
- Is Objective Short Sleep a Proxy for Frequent Insomnia?Journal of sleep research · 2026Trial
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study investigated the relationship between insomnia frequency and objective short sleep, a phenotype of insomnia. The hypothesis is that individuals with objective short sleep simply have more nights of insomnia per week. Data from a randomised controlled trial of Cognitive Behavioural Therapy for Insomnia combined with zolpidem and/or additional maintenance sessions were analysed. Insomnia frequency was derived from pre-treatment sleep diaries, using two definitions: nights with self-reported sleep latency (SL) or wake after sleep onset (WASO) > 30 min, and nights with self-reported sleep duration < 6 h. Objective short sleep was assessed via PSG sleep study, using < 6 h as the threshold. Results showed that objective short sleep was associated with more frequent insomnia when defined as nights with sleep duration < 6 h (8.1 ± 4.2 vs. 5.9 ± 3.7 nights/fortnight for short sleepers vs. normal sleepers, respectively), but not for nights with SL or WASO > 30 min. While insomnia frequency may partially explain objective short sleep, other factors likely influence this phenotype. Further studies are needed to explore the mechanisms underlying objective short sleep insomnia.
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Registered trials
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.