Evidence map›Paper›PMID 24484614›Full record

ArticleBMC public health2014

Chronic effects of ambient air pollution on respiratory morbidities among Chinese children: a cross-sectional study in Hong Kong.

Yang Gao, Emily Yy Chan, Liping Li, Patrick Wc Lau, Tze Wai Wong

Open access · goldAbstract read
In one paragraph

Article in BMC public health, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 11% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Quantifying the Health Burden Misclassification from the Use of Different PMInternational journal of environmental research and public health · 2020
    Article
  6. Asia Pacific allergy · 2020
    Review
  7. Indian annual ambient air quality standard is achievable by completely mitigating emissions from household sources.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  8. Implementation of Brain BreaksInternational journal of environmental research and public health · 2018
    Article
  9. Spatial and Temporal Dynamics in Air Pollution Exposure Assessment.International journal of environmental research and public health · 2018
    Review
  10. Article
  11. Pulmonary health effects of air pollution.Current opinion in pulmonary medicine · 2016
    Review
  12. Effects of air pollution on human health and practical measures for prevention in Iran.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2016
    Review
  13. Article
  14. Article
  15. 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 3 institutions in 2 countries.

Yang GaoDepartment of Physical Education, Hong Kong Baptist University, Hong Kong, China. gaoyang@hkbu.edu.hk.
Emily Yy Chan
Liping Li
Patrick Wc Lau
Tze Wai Wong
Chinese University of Hong Kong · CNHong Kong Baptist University · HKShantou University Medical College · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe chronic health effects from exposure to ambient air pollution are still unclear. This study primarily aims to examine the relationship between long-term exposure to ambient air pollution and respiratory morbidities in Chinese children.

methodsA cross-sectional study was conducted among 2,203 school children aged 8-10 in three districts with different air pollution levels in Hong Kong. Annual means for ambient PM10, SO2, NO2 and O3 in each district were used to estimate participants' individual exposure. Two questionnaires were used to collect children's respiratory morbidities and other potential risk factors. Multivariable logistic regression was fitted to estimate the risks of air pollution for respiratory morbidities.

resultsCompared to those in the low-pollution district (LPD), girls in the high-pollution district (HPD) were at significantly higher risk for cough at night (ORadj. = 1.81, 95% CI: 1.71-2.78) and phlegm without colds (ORadj. = 3.84, 95% CI: 1.74-8.47). In addition, marginal significance was reached for elevated risks for asthma, wheezing symptoms, and phlegm without colds among boys in HPD (adjusted ORs: 1.71-2.82), as well as chronic cough among girls in HPD (ORadj. = 2.03, 95% CI: 0.88-4.70).

conclusionsResults have confirmed certain adverse effects on children's respiratory health from long-term exposure to ambient air pollution. PM10 may be the most relevant pollutant with adverse effects on wheezing and phlegm in boys. Both PM10 and NO2 may be contributing to cough and phlegm in girls.

Indexed as

Air PollutionAsthmaChildCoughCross-Sectional StudiesFemaleHong KongHumansInhalation ExposureMaleNitrogen DioxideOzoneParticulate MatterRespiratory SoundsRespiratory Tract DiseasesRisk FactorsNitrogen DioxideOzoneParticulate MatterSulfur Dioxide

Identifiers

PMID24484614
PMCPMC3914361
OpenAlexW2117226144

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.