Evidence map›Paper›PMID 23493973›Full record

ArticleChest2013

Ozone is associated with an increased risk of respiratory exacerbations in patients with cystic fibrosis.

Sylvia C L Farhat, Marina B Almeida, Luiz Vicente R F Silva-Filho, Juliana Farhat, Joaquim C Rodrigues, Alfésio L F Braga

Open access · bronzeAbstract read
In one paragraph

Article in Chest, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
3.4field-weighted citation impact, top 9% 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

27 citing papers in PubMed, 60 citations in OpenAlex.

  1. Article
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  8. Aerosol physicochemical determinants of carbon black and ozone inhalation co-exposure induced pulmonary toxicity.Toxicological sciences : an official journal of the Society of Toxicology · 2023
    Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Role of Innate Immune System in Environmental Lung Diseases.Current allergy and asthma reports · 2021
    Review
  16. Review
  17. Article
  18. Article
  19. Review
  20. Contributions of Indoor and Outdoor Sources to Ozone in Residential Buildings in Nanjing.International journal of environmental research and public health · 2019
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 2 countries.

Sylvia C L FarhatEmergency Unit, Laboratory of Experimental Air Pollution, University of São Paulo Medical School, São Paulo; Children's Institute, Clinics Hospital and the Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, University of São Paulo Medical School, São Paulo. Electronic address: sylvia.farhat@gmail.com.
Marina B AlmeidaPulmonology Unit, Laboratory of Experimental Air Pollution, University of São Paulo Medical School, São Paulo.
Luiz Vicente R F Silva-FilhoPulmonology Unit, Laboratory of Experimental Air Pollution, University of São Paulo Medical School, São Paulo; Virology Laboratory, Tropical Medicine Institute, University of São Paulo, São Paulo.
Juliana FarhatChildren's Institute, Clinics Hospital and the Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, University of São Paulo Medical School, São Paulo.
Joaquim C RodriguesPulmonology Unit, Laboratory of Experimental Air Pollution, University of São Paulo Medical School, São Paulo.
Alfésio L F BragaChildren's Institute, Clinics Hospital and the Environmental Epidemiology Study Group, Laboratory of Experimental Air Pollution, University of São Paulo Medical School, São Paulo; Environmental Exposure and Risk Assessment, Collective Health Post-graduation Program, Catholic University of Santos, Santos, Brazil.
Children’s Institute · USUniversidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTropospheric oxidant pollutants may injure the respiratory tract. Cystic fibrosis (CF) respiratory disease involves significant inflammation and excessive oxidative stress, and exposure to air pollutants can magnify the lung damage. The objective of this study was to investigate the association between the short-term variation in the concentration of air pollutants in metropolitan São Paulo, Brazil, and the occurrence of respiratory exacerbations in children and adolescents with CF.

methodsA longitudinal panel of repeated measurements was obtained from 103 patients attending the outpatient center of our institution from September 6, 2006 through September 4, 2007. Daily concentrations of inhaled particulate matter, sulfur dioxide, nitrogen dioxide, ozone (O3), carbon monoxide, and meteorologic variables, such as the minimum temperature and relative humidity, were evaluated. The generalized estimation equation model for binomial distribution was used to assess the impact of these measurements on the occurrence of acute respiratory exacerbations.

resultsIn total, 103 patients with CF (median age, 8.9 years) made 408 visits, with a mean ± SD of 4 ± 1.74 visits per patient (range, 2-9). A respiratory disease exacerbation was diagnosed on 142 visits (38.4%). An interquartile range increase in the O3 concentration (45.62 μg/m3) had a positive, delayed (2 days after exposure) effect on the risk of a respiratory exacerbation (relative risk = 1.86; 95% CI, 1.14-3.02).

conclusionsThis study demonstrates that exposure to short-term air pollution in a large urban center increases the risk of a pulmonary exacerbation in patients with CF.

Indexed as

AdolescentAir PollutantsChildChild, PreschoolCystic FibrosisFemaleHumansInfantLongitudinal StudiesMaleOzoneRespiratory Tract DiseasesRisk AssessmentAir PollutantsOzone

Identifiers

PMID23493973
PMCPMC7172612
OpenAlexW2102216628

What OpenQuestion holds

Textmetadata
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.