Evidence map›Paper›PMID 25118606›Full record

ArticlePloS one2014

Acute effects of particulate matter and black carbon from seasonal fires on peak expiratory flow of schoolchildren in the Brazilian Amazon.

Ludmilla da Silva Viana Jacobson, Sandra de Souza Hacon, Hermano Albuquerque de Castro, Eliane Ignotti, Paulo Artaxo, Paulo Hilário Nascimento Saldiva, Antonio Carlos Monteiro Ponce de Leon

Abstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–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

24 citing papers in PubMed.

  1. Article
  2. Observational
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Reduction in forced vital capacity in asthmatic children on days with bushfire smoke exposure in the Australian 2019/2020 bushfire.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2022
    Article
  10. Article
  11. Article
  12. Air pollution and lung function in children.The Journal of allergy and clinical immunology · 2021
    Review
  13. Article
  14. Impact of exposure to smoke from biomass burning in the Amazon rain forest on human health.Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia · 2021
    Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Critical Review of Health Impacts of Wildfire Smoke Exposure.Environmental health perspectives · 2016
    Review
  20. Effect of Personal Exposure to PM2.5 on Respiratory Health in a Mexican Panel of Patients with COPD.International journal of environmental research and public health · 2015
    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

7 authors.

Ludmilla da Silva Viana JacobsonDepartment of Statistics, Fluminense Federal University, Niterói, Brazil.
Sandra de Souza HaconNational School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.
Hermano Albuquerque de CastroNational School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.
Eliane IgnottiInstitute of Natural and Technological Science, Mato Grosso State University, Cáceres, Brazil.
Paulo ArtaxoPhysics Institute, University of São Paulo, São Paulo, Brazil.
Paulo Hilário Nascimento SaldivaDepartment of Pathology, University of São Paulo, São Paulo, Brazil.
Antonio Carlos Monteiro Ponce de LeonDepartment of Epidemiology, Rio de Janeiro State University, Rio de Janeiro, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPanel studies have shown adverse effects of air pollution from biomass burning on children's health. This study estimated the effect of current levels of outdoor air pollution in the Amazonian dry season on peak expiratory flow (PEF).

methodsA panel study with 234 schoolchildren from 6 to 15 years old living in the municipality of Tangará da Serra, Brazil was conducted. PEF was measured daily in the dry season in 2008. Mixed-effects models and unified modelling repeated for every child were applied. Time trends, temperature, humidity, and subject characteristics were regarded. Inhalable particulate matter (PM10), fine particulate matter (PM2.5), and black carbon (BC) effects were evaluated based on 24-hour exposure lagged by 1 to 5 days and the averages of 2 or 3 days. Polynomial distributed lag models (PDLM) were also applied.

resultsThe analyses revealed reductions in PEF for PM10 and PM2.5 increases of 10 µg/m(3) and 1 µg/m(3) for BC. For PM10, the reductions varied from 0.15 (confidence interval (CI)95%: -0.29; -0.01) to 0.25 l/min (CI95%: -0.40; -0.10). For PM2.5, they ranged from 0.46 (CI95%: -0.86 to -0.06) to 0.54 l/min (CI95%:-0.95; -0.14). As for BC, the reduction was approximately 1.40 l/min. In relation to PDLM, adverse effects were noticed in models based on the exposure on the current day through the previous 3 days (PDLM 0-3) and on the current day through the previous 5 days (PDLM 0-5), specially for PM10. For all children, for PDLM 0-5 the global effect was important for PM10, with PEF reduction of 0.31 l/min (CI95%: -0.56; -0.05). Also, reductions in lags 3 and 4 were observed. These associations were stronger for children between 6 and 8 years old.

conclusionReductions in PEF were associated with air pollution, mainly for lagged exposures of 3 to 5 days and for younger children.

Indexed as

FiresAdolescentAir PollutantsBrazilChildEnvironmental MonitoringHumansParticle SizeParticulate MatterPulmonary VentilationTime FactorsAir PollutantsParticulate Matter

Identifiers

PMID25118606
PMCPMC4131919

What OpenQuestion holds

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LicenceCC BY
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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.