Evidence map›Paper›PMID 22139138›Full record

SynthesisSleep & breathing = Schlaf & Atmung2012

Effect of automatic versus fixed continuous positive airway pressure for the treatment of obstructive sleep apnea: an up-to-date meta-analysis.

Ting Xu, Taoping Li, Dongning Wei, Yuan Feng, Lewu Xian, Haiqing Wu, Jian Xu

Abstract readComparative StudyMeta-AnalysisReview
PubMed Publisher
In one paragraph

Synthesis in Sleep & breathing = Schlaf & Atmung, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 14% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Trends in CPAP adherence over twenty years of data collection: a flattened curve.Journal of otolaryngology - head & neck surgery = Le Journal d'oto-rhino-laryngologie et de chirurgie cervico-faciale · 2016
    Pooled it
  3. Auto-adjusting positive airway pressure treatment for sleep apnea diagnosed by home sleep testing.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2014
    Trial
  4. Trial
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Monitoring Seasonal Compliance of Patients with Obstructive Sleep Apnea Using CPAP Systems via SD Card.Acta informatica medica : AIM : journal of the Society for Medical Informatics of Bosnia & Herzegovina : casopis Drustva za medicinsku informatiku BiH · 2023
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Treatments for Obstructive Sleep Apnea.Journal of clinical outcomes management : JCOM · 2016
    Article
  18. Article
  19. Article
  20. Article
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

7 authors at 3 institutions in 1 country.

Ting XuDepartment of Sleep Disorder Center, Nanfang Hospital, Southern Medical University, No. 1838 Guangzhou Dadao Bei, Guangzhou, 510515, China.
Taoping Li
Dongning Wei
Yuan Feng
Lewu Xian
Haiqing Wu
Jian Xu
Southern Medical University · CNNanfang Hospital · CNThe 309th Hospital of Chinese People's Liberation Army · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis study was made to evaluate the effect of automatic continuous positive airway pressure (auto-CPAP) versus fixed continuous positive airway pressure (fixed CPAP) in reducing the apnea-hypopnea index (AHI) and the mean therapy pressure, improving subjective sleepiness, sleep architecture, patient compliance, and preference in patients with obstructive sleep apnea.

methodsWe searched the electronic databases MEDLINE, EMBASE, the Cochrane Library, and Google Scholar. Randomized controlled trials comparing auto-CPAP with fixed CPAP were reviewed. Continuous variables were presented as mean difference (MD), and dichotomous data as odds ratio (OR), both with 95% confidence intervals (CI).

resultsWe identified 19 studies consisting of 845 patients. Compared to fixed CPAP, the use of auto-CPAP reduced mean therapy pressure (MD -1.64; 95% CI -2.46 to -0.82), improved patient compliance (MD 0.23; 95% CI 0.06 to 0.39), increased the percentage of total sleep time (TST) in slow wave sleep (MD 5.11; 95% CI 1.34 to 8.88), and decreased the percentage of TST in stage 2 sleep (MD -4.75; 95% CI -9.38 to -0.11). Moreover, more patients preferred auto-CPAP therapy (OR 3.65; 95% CI 1.27 to 10.53). There were nonsignificant trends towards better outcomes with auto-CPAP for AHI and Epworth Sleepiness Scale (MD -0.43; 95% CI -1.10 to 0.23, and MD -0.24; 95% CI -0.74 to 0.25, respectively), though these are of questionable clinical significance.

conclusionsThere are some aspects of clinical care, such as a mild improvement in compliance, patient preference, and sleep architecture that appear to favor the use of auto-CPAP compared to fixed CPAP. The clinical relevance of these findings requires further study.

Indexed as

Continuous Positive Airway PressureDisorders of Excessive SomnolenceHumansPatient CompliancePolysomnographySleep Apnea, ObstructiveSurveys and QuestionnairesTherapy, Computer-AssistedTreatment Outcome

Identifiers

PMID22139138
OpenAlexW2046542771

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.