Evidence map›Paper›PMID 28003742›Full record

SynthesisInternational journal of chronic obstructive pulmonary disease2016

Major air pollutants and risk of COPD exacerbations: a systematic review and meta-analysis.

Jinhui Li, Shengzhi Sun, Robert Tang, Hong Qiu, Qingyuan Huang, Tonya G Mason, Linwei Tian

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in International journal of chronic obstructive pulmonary disease, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 133 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
133citing papers in PubMed, 7 pooled it
11.0field-weighted citation impact, top 1% 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

133 citing papers in PubMed, 7 syntheses or guidelines pooled it, 275 citations in OpenAlex.

  1. Pooled it
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  6. Pooled it
  7. A Systematic Review and Meta-Analysis of Short-Term Ambient Ozone Exposure and COPD Hospitalizations.International journal of environmental research and public health · 2020
    Pooled it
  8. Trial
  9. Trial
  10. Review
  11. Article
  12. Health effects of air pollution on chronic respiratory diseases.The Korean journal of internal medicine · 2026
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

73 more citing papers are in PubMed but not listed here.

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 at 3 institutions in 2 countries.

Jinhui LiShenzhen Institute of Research and Innovation, Nanshan, The University of Hong Kong, Shenzhen, People's Republic of China; School of Public Health, The University of Hong Kong, Pok Fu Lam, Hong Kong Special Administrative Region.
Shengzhi SunShenzhen Institute of Research and Innovation, Nanshan, The University of Hong Kong, Shenzhen, People's Republic of China; School of Public Health, The University of Hong Kong, Pok Fu Lam, Hong Kong Special Administrative Region.
Robert TangShenzhen Institute of Research and Innovation, Nanshan, The University of Hong Kong, Shenzhen, People's Republic of China; School of Public Health, The University of Hong Kong, Pok Fu Lam, Hong Kong Special Administrative Region.
Hong QiuSchool of Public Health, The University of Hong Kong, Pok Fu Lam, Hong Kong Special Administrative Region.
Qingyuan HuangDepartment of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Minhang, Shanghai, People's Republic of China.
Tonya G MasonSchool of Public Health, The University of Hong Kong, Pok Fu Lam, Hong Kong Special Administrative Region.
Linwei TianShenzhen Institute of Research and Innovation, Nanshan, The University of Hong Kong, Shenzhen, People's Republic of China; School of Public Health, The University of Hong Kong, Pok Fu Lam, Hong Kong Special Administrative Region.
University of Hong Kong · HKCity University of Hong Kong, Shenzhen Research Institute · CNShanghai Jiao Tong University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundShort-term exposure to major air pollutants (O

methodsAfter a systematic search up until March 30, 2016, in both English and Chinese electronic databases such as PubMed, EMBASE, and CNKI, the pooled relative risks and 95% confidence intervals were estimated by using the random-effects model. In addition, the population-attributable fractions (PAFs) were also calculated, and a subgroup analysis was conducted. Heterogeneity was assessed by

resultsIn total, 59 studies were included. In the single-pollutant model, the risks of COPD were calculated by each 10 μg/m

conclusionShort-term exposure to air pollutants increases the burden of risk of COPD acute exacerbations significantly. Controlling ambient air pollution would provide benefits to COPD patients.

Indexed as

AdolescentAdultAgedAged, 80 and overAir PollutantsChildChild, PreschoolDisease ProgressionFemaleHumansInfantInfant, NewbornInhalation ExposureLungMaleMiddle AgedAir Pollutantsacute exposureair pollutionCOPD exacerbationsmeta-analysis

Identifiers

PMID28003742
PMCPMC5161337
OpenAlexW2564702730

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.