Evidence map›Paper›PMID 26893936›Full record

ArticleClinical hypertension2015

The platelet-to-lymphocyte ratio reflects the severity of obstructive sleep apnea syndrome and concurrent hypertension.

Yeo-Jeong Song, Jae Hwan Kwon, Joo Yeon Kim, Bo Young Kim, Kyoung Im Cho

Open access · diamondAbstract read
In one paragraph

Article in Clinical hypertension, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

18 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
  2. Role of hematological parameters and inflammatory indices in determining the severity of obstructive sleep apnea syndrome: reality or myth?European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025
    Article
  3. Is there a relationship between the severity of obstructive sleep apnea syndrome and the systemic immune inflammation index?European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2024
    Article
  4. Obstructive Sleep Apnea, Platelet Aggregation, and Cardiovascular Risk.Journal of the American Heart Association · 2024
    Article
  5. Article
  6. Review
  7. Article
  8. Systemic inflammation markers and the prevalence of hypertension: A NHANES cross-sectional study.Hypertension research : official journal of the Japanese Society of Hypertension · 2023
    Article
  9. Review
  10. Observational
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Review
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 at 2 institutions in 1 country.

Yeo-Jeong Song *Division of Cardiology, Department of Internal Medicine, Kim-Hae Jung Ang Hospital, Busan, Korea.
Jae Hwan Kwon *Department of Otorhinolaryngology Head-Neck Surgery, Kosin University College of Medicine, Busan, Korea.
Joo Yeon KimDepartment of Otorhinolaryngology Head-Neck Surgery, Kosin University College of Medicine, Busan, Korea.
Bo Young KimDepartment of Otorhinolaryngology Head-Neck Surgery, Maryknoll Medical Center, Busan, Korea.
Kyoung Im ChoDivision of Cardiology, Department of Internal Medicine, Cardiovascular Research Institute, Kosin University School of Medicine, 34 Amnam-Dong, Seo-Ku, Busan, 602-702 Korea.
Kosin University · KRMaryknoll Medical Center · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic intermittent hypoxia, platelet activation and inflammation all play roles in the pathogenesis of obstructive sleep apnea syndrome (OSAS), which may increase the risk of cardiovascular disease (CVD). The aim of this study was to evaluate the relationship of the platelet-to-lymphocyte ratio (PLR) as a new biomarker showing systemic inflammation and platelet distribution width (PDW) as an indicator of platelet activation to the severity of OSAS.

methodsA total of 290 patients suspected with OSAS who underwent a full night of polysomnography were included. The patients were placed into 4 separate groups according to their apnea-hypopnea index (AHI) scores; the control group (AHI <5), mild OSAS group (AHI 5-15), moderate OSAS group (AHI 16-30), and severe OSAS group (AHI >30). CVD risk was defined by the presence of hypertension, diabetes mellitus, current smoking, and dyslipidemia.

resultsHigher AHI groups were significantly correlated with increasing age, body mass index, systolic blood pressure and male sex. PLR and PDW were also significantly associated with AHI (r = 0.417 for PLR and r = 0.227 for PDW, all p-values < 0.001) and the Epworth sleepiness scale (r = 0.160 for PLR and r = 0.189 for PDW, all p-values <0.05). Multivariate regression analysis revealed that AHI ≥9.2 (adjusted odds ratios [OR] 5.03, 95 % confidential interval (CI) = 1.67-15.2, p = 0.004) and PLR ≥159 (adjusted OR 2.81, 95 % CI = 1.34-5.91, p = 0.006) were independently associated with the presence of hypertension.

conclusionPLR and PDW are associated with OSAS severity. PLR may also be useful as a systemic biomarker for the concurrent hypertension in OSAS patients.

Indexed as

HypertensionObstructive sleep apneaPlatelet-to-lymphocyte ratio

Identifiers

PMID26893936
PMCPMC4750799
OpenAlexW2207653685

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.