Evidence map›Paper›PMID 40557809›Full record

Trial reportJournal of sleep research2026

A Comparison of Snoring Changes With a Supine-Avoidance Alarm Device Compared to Constant Positive Airway Pressure Treatment in Patients With Supine-Predominant OSA.

Matthew M Rahimi, Andrew Vakulin, David Stevens, Peter G Catcheside

Abstract readRandomized Controlled TrialComparative Study
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 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. Trial
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.

Matthew M RahimiFlinders Health and Medical Research Institute: Sleep Health, (Formerly Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia.ORCID 0000-0002-7799-9348
Andrew VakulinFlinders Health and Medical Research Institute: Sleep Health, (Formerly Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia.ORCID 0000-0002-3919-1313
David StevensFlinders Health and Medical Research Institute: Sleep Health, (Formerly Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia.ORCID 0000-0002-8412-2202
Peter G CatchesideFlinders Health and Medical Research Institute: Sleep Health, (Formerly Adelaide Institute for Sleep Health), College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to quantify how much snoring occurs in patients with supine-predominant OSA and the comparative effectiveness of supine-avoidance therapy versus CPAP to reduce objective measures of snoring. Participants had a 1-week in-home sleep posture assessment and a in-home PSG study before being randomised to either CPAP or supine-avoidance therapy for 6-8 weeks, then switched treatments for another 6-8 weeks. Snoring and treatment outcomes were examined in a subgroup of patients with supine dependent snoring. Baseline measurements showed snoring frequency was 48.9 [95% CI 16.7 to 188.7], 26.3 [95% CI 17.0 to 106.3], 57.5 [95% CI 16.8 to 190.7] snores/h for the whole group, supine snorer and non-supine snorers respectively. Supine sleep as a percentage of total sleep was almost completely abolished with supine-avoidance treatment (Baseline = 30.7% [95% 15.4 to 46.4], supine-avoidance = 0.2% [95% 0.0 to 15.7]). In the whole group, CPAP significantly reduced overall snoring frequency although residual snoring remained. However, no treatment effect was observed with supine-avoidance therapy in reducing snoring frequency (frequency of snores ≥ 50 dBA; baseline = 48.9 [95% 16.7 to 188.7], supine-avoidance = 36.8 [95% 6.3 to 233.7], CPAP = 4.2 [95% 2.1 to 29.5] snores/h). In the sub-group of supine-predominant snorers, supine-avoidance therapy was associated with reduced snoring frequency (Baseline = 26.3 [95% 17.0 to 106.3], supine-avoidance = 14.3 [95% 3.0 to 18.1], CPAP = 4.6 [95% 2.6 to 8.9] snores/h). Supine-avoidance therapy may not necessarily lead to a systematic reduction of snoring frequency in patients with supine-predominant OSA but appears effective in a subgroup of patients.

Indexed as

Continuous Positive Airway PressureSleep Apnea, ObstructiveSnoringAdultFemaleHumansMaleMiddle AgedPolysomnographySupine PositionTreatment OutcomeCPAPposture shiftsleep apneasnoringsupine‐avoidance

Identifiers

PMID40557809
PMCPMC12856120

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Registered trials

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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.