Evidence map›Paper›PMID 15923246›Full record

ArticleThorax2005

Traffic related air pollution as a determinant of asthma among Taiwanese school children.

B-F Hwang, Y-L Lee, Y-C Lin, J J K Jaakkola, Y L Guo

Open access · bronzeAbstract read
In one paragraph

Article in Thorax, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 2 pooled it
4.3field-weighted citation impact, top 5% 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

33 citing papers in PubMed, 2 syntheses or guidelines pooled it, 104 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Residential NOAsia Pacific allergy · 2018
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  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Early-life air pollution and asthma risk in minority children. The GALA II and SAGE II studies.American journal of respiratory and critical care medicine · 2013
    Article
  17. Allergic diseases and air pollution.Asia Pacific allergy · 2013
    Article
  18. Article
  19. The association between community stressors and asthma prevalence of school children in Winnipeg, Canada.International journal of environmental research and public health · 2012
    Article
  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

5 authors at 1 institution in 1 country.

B-F HwangDepartment of Health Care Administration, Diwan College of Management, Tainan, Taiwan.
Y-L Lee
Y-C Lin
J J K Jaakkola
Y L Guo
Min-Hwei College of Health Care Management · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is evidence that long term exposure to ambient air pollution increases the risk of childhood asthma, but the role of different sources and components needs further elaboration. To assess the effect of air pollutants on the risk of asthma among school children, a nationwide cross sectional study of 32 672 Taiwanese school children was conducted in 2001.

methodsRoutine air pollution monitoring data for sulphur dioxide (SO2), nitrogen oxides (NOx), ozone (O3), carbon monoxide (CO), and particles with an aerodynamic diameter of 10 microm or less (PM10) were used. Information on individual characteristics and indoor environments was from a parent administered questionnaire (response rate 93%). The exposure parameters were calculated using the mean of the 2000 monthly averages. The effect estimates were presented as odds ratios (ORs) per 10 ppb changes for SO2, NOx, and O3, 100 ppb changes for CO, and 10 microg/m3 changes for PM10.

resultsIn a two stage hierarchical model adjusting for confounding, the risk of childhood asthma was positively associated with O3 (adjusted OR 1.138, 95% confidence interval (CI) 1.001 to 1.293), CO (adjusted OR 1.045, 95% CI 1.017 to 1.074), and NOx (adjusted OR 1.005, 95% CI 0.954 to 1.117). Against our prior hypothesis, the risk of childhood asthma was weakly or not related to SO2 (adjusted OR 0.874, 95% CI 0.729 to 1.054) and PM10 (adjusted OR 0.934, 95% CI 0.909 to 0.960).

conclusionsThe results are consistent with the hypothesis that long term exposure to traffic related outdoor air pollutants such as NOx, CO, and O3 increases the risk of asthma in children.

Indexed as

AdolescentAir PollutantsAsthmaCarbon MonoxideChildCross-Sectional StudiesFemaleHumansMaleNitrogen OxidesOdds RatioOzoneRisk FactorsSulfur DioxideTaiwanVehicle EmissionsAir PollutantsCarbon MonoxideNitrogen OxidesOzoneSulfur DioxideVehicle Emissions

Identifiers

PMID15923246
PMCPMC1747433
OpenAlexW2143967402

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.