Evidence map›Paper›PMID 30186673›Full record

ArticlePeerJ2018

The effect of outdoor air pollution on the risk of hospitalisation for bronchiolitis in infants: a systematic review.

Charlotte King, Jamie Kirkham, Daniel Hawcutt, Ian Sinha

Open access · goldAbstract read
In one paragraph

Article in PeerJ, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 4 pooled it
1.5field-weighted citation impact, top 18% 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, 4 syntheses or guidelines pooled it, 36 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Air pollution and hospitalization risk in infants with bronchiolitis: A systematic review and meta-analysis.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2025
    Pooled it
  4. Characteristics of cohort studies of long-term exposure to PMEnvironmental science and pollution research international · 2019
    Pooled it
  5. Article
  6. Article
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  8. The influence of air pollutants on the risk of emergency department presentations of infants with bronchiolitis in an European air quality hotspot.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2025
    Observational
  9. Air pollution and respiratory diseases in conurbated cities in the state of São Paulo.Revista paulista de pediatria : orgao oficial da Sociedade de Pediatria de Sao Paulo · 2025
    Article
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  12. Review
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  15. Review
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  17. PMPediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2022
    Article
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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

4 authors at 1 institution in 1 country.

Charlotte King *Department of Women and Child's Health, University of Liverpool, Liverpool, UK.ORCID 0000-0002-7887-3640
Jamie KirkhamDepartment of Biostatistics, University of Liverpool, Liverpool, UK.
Daniel Hawcutt *NIHR Alder Hey Clinical Research Facility, Alder Hey Children's Hospital, Liverpool, UK.ORCID 0000-0002-8120-6507
Ian Sinha *Department of Respiratory Medicine, Alder Hey Children's Hospital, Liverpool, UK.
University of Liverpool · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo systematically review the evidence around the effect of ambient levels of particulate and gaseous pollutants, and the risk of hospitalisation with bronchiolitis for infants under two years of age.

designSystematic review of observational epidemiological studies including cohort, time series, case crossover and case control study designs. DATA SOURCES: Medline, Scopus, and Web of Science searched to November 2017 with no language restrictions. ELIGIBILITY CRITERIA: Studies investigating impact of air pollution levels on particulate pollutants (diameter <2.5 μm (PM2.5) or <10 μm (PM10) and gaseous pollutants (nitrogen dioxide (NO

main outcome measureRisk of hospitalisation from bronchiolitis.

resultsEight studies were eligible for review. Long term exposure to PM2.5 may be associated with increased risk of hospitalisation for bronchiolitis. SO

conclusionsCertain particulate and gaseous pollutants may have a clinically relevant effect on hospital admissions for bronchiolitis in children below age two years old. Large cohort or time series studies are needed to examine this possible association. PROTOCOL: The protocol can be found at PROSPERO (CRD42017080643).

Indexed as

Air pollutionBronchiolitisHospitalisationSystematic review

Identifiers

PMID30186673
PMCPMC6118201
OpenAlexW2889530086

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.