Evidence map›Paper›PMID 29304074›Full record

ArticlePloS one2018

Absolute lung size and the sex difference in breathlessness in the general population.

Magnus Ekström, Josefin Sundh, Linus Schiöler, Eva Lindberg, Annika Rosengren, Göran Bergström, Oskar Angerås, Jan Hedner, John Brandberg, Björn Bake and 1 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
3.8field-weighted citation impact, top 6% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 53 citations in OpenAlex.

  1. Prevalence, risk factors and treatments for post-COVID-19 breathlessness: a systematic review and meta-analysis.European respiratory review : an official journal of the European Respiratory Society · 2022
    Pooled it
  2. Article
  3. Article
  4. Clinical predictors of impaired pulmonary diffusing capacity in patients recovering from COVID-19: A secondary analysis of multicentre datasets.Canadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Sex, gender and the pulmonary physiology of exercise.European respiratory review : an official journal of the European Respiratory Society · 2022
    Review
  16. Article
  17. Article
  18. Article
  19. Observational
  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

11 authors at 5 institutions in 1 country.

Magnus EkströmDepartment of Respiratory Medicine and Allergology, Institution for Clinical Sciences, Lund University, Lund, Sweden.ORCID 0000-0002-7227-5113
Josefin SundhDepartment of Respiratory Medicine, School of Medical Sciences, Örebro University, Örebro, Sweden.
Linus SchiölerSection of Occupational and environmental medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Eva LindbergDepartment of Medical Sciences, Respiratory-, Allergy- and Sleep Research, Uppsala University, Uppsala, Sweden.
Annika RosengrenThe Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden.
Göran BergströmThe Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden.
Oskar AngeråsThe Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska University Hospital, University of Gothenburg, Gothenburg, Sweden.
Jan HednerDepartment of Internal Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden.
John BrandbergDepartment of Radiology, Institute of Clinical Sciences, University of Gothenburg, Gothenburg, Sweden.
Björn BakeDepartment of Respiratory Medicine and Allergology, University of Gothenburg, Gothenburg, Sweden.
Kjell TorénSection of Occupational and environmental medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
University of Gothenburg · SESahlgrenska University Hospital · SELund University · SEÖrebro University · SEUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBreathlessness is associated with major adverse health outcomes and is twice as common in women as men in the general population. We evaluated whether this is related to their lower absolute lung volumes.

methodsCross-sectional analysis of the population-based Swedish CardioPulmonarybioImage Study (SCAPIS) Pilot, including static spirometry and diffusing capacity (n = 1,013; 49% women). Breathlessness was measured using the modified Medical Research Council (mMRC) scale and analyzed using ordinal logistic regression adjusting for age, pack-years of smoking, body mass index, chronic airway limitation, asthma, chronic bronchitis, depression and anxiety in all models.

resultsBreathlessness was twice as common in women as in men; adjusted odds ratio (OR) 2.20 (95% confidence interval, 1.32-3.66). Lower absolute lung volumes were associated with increased breathlessness prevalence in both men and women. The sex difference in breathlessness was unchanged when adjusting for lung function in %predicted, but disappeared when controlling for absolute values of total lung capacity (OR 1.12; 0.59-2.15), inspiratory capacity (OR 1.26; 0.68-2.35), forced vital capacity (OR 0.84; 0.42-1.66), forced expiratory volume in one second (OR 0.70; 0.36-1.35) or lung diffusing capacity (OR 1.07; 0.58-1.97).

conclusionIn the general population, the markedly higher prevalence of breathlessness in women is related to their smaller absolute lung volumes.

Indexed as

Sex FactorsCross-Sectional StudiesDyspneaFemaleHumansLungMaleMiddle AgedRespiratory Function TestsSweden

Identifiers

PMID29304074
PMCPMC5755925
OpenAlexW2782158243

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.