Evidence map›Paper›PMID 32232718›Full record

ArticleSleep & breathing = Schlaf & Atmung2021

Hypoxemic features of obstructive sleep apnea and the risk of mortality: a cluster analysis.

Gonzalo Labarca, Jorge Jorquera, Jorge Dreyse, Constanza Salas, Francisca Letelier

Abstract read
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In one paragraph

Article in Sleep & breathing = Schlaf & Atmung, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–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

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Association of obstructive sleep apnea and nocturnal hypoxemia with all-cancer incidence and mortality: a systematic review and meta-analysis.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Obstructive sleep apnea severity, circulating biomarkers, and cancer risk.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. International Consensus Statement on Obstructive Sleep Apnea.International forum of allergy & rhinology · 2023
    Review
  12. Observational
  13. Short-term positive effects of a mandibular advancement device in a selected phenotype of patients with moderate obstructive sleep apnea: a prospective study.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2023
    Article
  14. Article
  15. Cluster-derived obstructive sleep apnea phenotypes and outcomes at 5-year follow-up.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2022
    Article
  16. Review
  17. 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

5 authors.

Gonzalo LabarcaFacultad de Medicina, Universidad San Sebastian, Concepcion, Chile. glabarcat@gmail.com.
Jorge JorqueraCentro de Enfermedades Respiratorias y grupo de estudio trastornos respiratorios del sueño (GETRS), Clínica Las Condes, Las Condes, Chile.
Jorge DreyseCentro de Enfermedades Respiratorias y grupo de estudio trastornos respiratorios del sueño (GETRS), Clínica Las Condes, Las Condes, Chile.
Constanza SalasCentro de Enfermedades Respiratorias y grupo de estudio trastornos respiratorios del sueño (GETRS), Clínica Las Condes, Las Condes, Chile.
Francisca LetelierCentro de Enfermedades Respiratorias y grupo de estudio trastornos respiratorios del sueño (GETRS), Clínica Las Condes, Las Condes, Chile.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionPatients with moderate to severe obstructive sleep apnea (OSA) have an increased risk of cardiovascular comorbidities and mortality. Although different subtypes of OSA have been described, data about oximetric parameters and their suitability to identify a different phenotype are scant. In this study, we evaluate the association between moderate to severe OSA and oximetric parameters included in the home sleep apnea test (HSAT) and the risks of all-cause mortality, cardiovascular mortality, and cancer mortality.

methodsAdult patients with moderate to severe OSA from a clinical cohort in Chile were included (SantOSA study). We developed a latent class analysis (LCA) incorporating oximetric measures commonly reported on HSAT. Differences between the groups were evaluated using ANOVA and the chi-squared test. Survival curves were constructed using a Kaplan-Meier (log-rank) model, and adjusted hazard ratios of mortality were calculated using a Cox regression model following a confounder analysis of cardiovascular comorbidities.

resultsA total of 889 patients were included in the analysis. LCA identified three different clusters: Cluster 1, "nonhypoxemic" (n = 591); cluster 2, "moderately hypoxemic" (n = 297); and cluster 3, "severely hypoxemic" (n = 115). The mean follow-up was 4.7 years. The hypoxemic groups showed an increased risk of cardiometabolic comorbidities and an independent risk of all-cause mortality (adjusted HR 1.67 (CI 1.0-2.64) p value = 0.027). The moderately hypoxemic group had an adjusted HR of 2.92 (CI 1.00-8.58), p value = 0.05, while the severely hypoxemic group had an adjusted HR of 2.55 (CI 1.08-6.02), p value = 0.031. For cardiovascular mortality, we found an HR of 2.03 (CI 0.50-8.136), p value = 0.31, and for cancer mortality, we found an HR of 5.75 (CI 1.03-32.17), p value = 0.042.

conclusionOximetric parameters are useful for describing a different phenotype with a high risk of mortality among patients with moderate to severe OSA, beyond the apnea-hypopnea index.

Indexed as

AdultAgedCardiovascular DiseasesCause of DeathCluster AnalysisComorbidityFemaleFollow-Up StudiesHumansHypoxiaKaplan-Meier EstimateMaleMiddle AgedNeoplasmsOximetryProportional Hazards ModelsHypoxiaObstructive, sleep apneaOximetrySleep apnea

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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.