Evidence map›Paper›PMID 34172466›Full record

SynthesisThe European respiratory journal2022

Blood eosinophil counts in the general population and airways disease: a comprehensive review and meta-analysis.

Victoria S Benson, Sylvia Hartl, Neil Barnes, Nicholas Galwey, Melissa K Van Dyke, Namhee Kwon

Abstract readMeta-AnalysisReview
In one paragraph

Synthesis in The European respiratory journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed, 4 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

72 citing papers in PubMed, 4 syntheses or guidelines pooled it.

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  12. [Mendelian Randomization Analysis of Potential Molecular Targets for Type 2 Airway Inflammatory Diseases].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2026
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  19. A translational view of airway epithelial dysfunction in COPD.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
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12 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Victoria S BensonEpidemiology, Value Evidence and Outcomes (VEO), Global Medical R&D, GlaxoSmithKline, Brentford, UK victoria.x.tribble@gsk.com.
Sylvia HartlDept of Respiratory and Critical Care Medicine and Ludwig Boltzmann Institute for Lung Health, Clinic Penzing, WiGev and Sigmund Freud University, Medical School, Vienna, Austria.ORCID 0000-0002-0734-0070
Neil BarnesRespiratory Therapy Area, GlaxoSmithKline, Brentford, UK.
Nicholas GalweyResearch Statistics, GlaxoSmithKline, Stevenage, UK.
Melissa K Van DykeEpidemiology, Value Evidence and Outcomes (VEO), Global Medical R&D, GlaxoSmithKline, Upper Providence, PA, USA.ORCID 0000-0001-7246-2093
Namhee KwonRespiratory Research and Development, GlaxoSmithKline, Brentford, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe clinical context for using blood eosinophil (EOS) counts as treatment-response biomarkers in asthma and COPD requires better understanding of EOS distributions and ranges. We describe EOS distributions and ranges published in asthma, COPD, control (non-asthma/COPD) and general populations.

methodsWe conducted a comprehensive literature review and meta-analysis of observational studies (January 2008 to November 2018) that included EOS counts in asthma, severe asthma, COPD, control and general populations. Excluded studies had total sample sizes <200, EOS as inclusion criterion, hospitalised population only and exclusively paediatric participants.

resultsOverall, 91 eligible studies were identified, most had total-population-level data available: asthma (39 studies), severe asthma (12 studies), COPD (23 studies), control (seven studies) and general populations (14 studies); some articles reported data for multiple populations. Reported EOS distributions were right-skewed (seven studies). Reported median EOS counts ranged from 157-280 cells·µL

conclusionEOS distribution and range varied by study population, and were affected by clinical factors including age, smoking history and comorbidities, which, regardless of severity, should be considered during treatment decision-making.

Indexed as

AsthmaPulmonary Disease, Chronic ObstructiveRespiration DisordersAdolescentChildEosinophilsHumansLeukocyte CountMale

Identifiers

PMID34172466
PMCPMC8756293

What OpenQuestion holds

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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.