Trial reportSleep2012
Ambient temperature and obstructive sleep apnea: effects on sleep, sleep apnea, and morning alertness.
Trial report in Sleep, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00544752 (Indoor Temperature and Sleep Apnea), which is not on this map. Cited by 13 papers, 1 of them a synthesis that pooled 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.
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.
Indoor Temperature and Sleep Apnea
Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.
- Air pollution exposure and adverse sleep health across the life course: A systematic review.Environmental pollution (Barking, Essex : 1987) · 2020Pooled it
- Trial
- Associations between weather variables and sleep architecture: A large-scale analysis using consumer sleep data.Sleep & breathing = Schlaf & Atmung · 2026Article
- Thermoregulation in Sleep Disorders-Comprehensive Review.Journal of clinical medicine · 2026Review
- Recovery for Professional and Elite Amateur Golfers: A Scoping Review of Evidence-Based Methods.Sports medicine (Auckland, N.Z.) · 2025Article
- Climate warming may undermine sleep duration and quality in repeated-measure study of 23 million records.Nature communications · 2025Article
- The correlation of sleep disorders with postoperative outcomes in spine surgery: A narrative review.North American Spine Society journal · 2025Article
- Air pollution, weather and positive airway pressure treatment adherence in adults with sleep apnea: a retrospective community-based repeated-measures longitudinal study.Journal of sleep research · 2024Article
- The evidence does not support long-term oxygenation as a functional explanation for the evolution of yawning.Sleep & breathing = Schlaf & Atmung · 2023Article
- Associations of daily weather and ambient air pollution with objectively assessed sleep duration and fragmentation: a prospective cohort study.Sleep medicine · 2020Article
- The importance of the intensive care unit environment in sleep-A study with healthy participants.Journal of sleep research · 2020Article
- Air Pollutants Are Associated With Obstructive Sleep Apnea Severity in Non-Rapid Eye Movement Sleep.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2019Article
- Perceived neighborhood quality, sleep quality, and health status: evidence from the Survey of the Health of Wisconsin.Social science & medicine (1982) · 2013Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
STUDY
objectivesThe aim of the study was to investigate the effect of ambient temperature on sleep, sleep apnea, and morning alertness in patients with obstructive sleep apnea.
designRandomized controlled trial.
settingIn-hospital investigations.
participantsForty patients with obstructive sleep apnea naïve to treatment, with an apnea-hypopnea index of 10-30.
interventionsThree different nights in room temperatures of 16°C, 20°C, and 24°C. MEASUREMENTS: Overnight polysomnography and Karolinska Sleepiness Scale.
resultsThe obstructive apnea-hypopnea index was 30 ± 17 at 16°C room temperature, 28 ± 17 at 20°C, and 24 ± 18 at 24°C. The obstructive apnea-hypopnea index was higher at 16°C room temperature versus 24°C (P = 0.001) and at 20°C room temperature versus 24°C (P = 0.033). Total sleep time was a mean of 30 min longer (P = 0.009), mean sleep efficiency was higher (77 ± 11% versus 71 ± 13% respectively, P = 0.012), and the patients were significantly more alert according to the Karolinska Sleepiness Scale (P < 0.028) in the morning at 16°C room temperature versus 24°C. The amount of sleep in different sleep stages was not affected by room temperature.
conclusionsUntreated patients with obstructive sleep apnea sleep longer, have better sleep efficiency, and are more alert in the morning after a night's sleep at 16°C room temperature compared with 24°C, but obstructive sleep apnea is more severe at 16°C and 20°C compared with 24°C. CLINICAL TRIAL INFORMATION: This study is registered in ClinicalTrials.gov number NCT00544752.
Indexed as
Identifiers
What OpenQuestion holds
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.