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

Overview of attention for article published in International Journal of Chronic Obstructive Pulmonary Disease, December 2016
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About this Attention Score

  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (88th percentile)
  • High Attention Score compared to outputs of the same age and source (86th percentile)

Mentioned by

policy
2 policy sources
twitter
14 tweeters

Citations

dimensions_citation
101 Dimensions

Readers on

mendeley
169 Mendeley
Title
Major air pollutants and risk of COPD exacerbations: a systematic review and meta-analysis
Published in
International Journal of Chronic Obstructive Pulmonary Disease, December 2016
DOI 10.2147/copd.s122282
Pubmed ID
Authors

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

Abstract

Short-term exposure to major air pollutants (O3, CO, NO2, SO2, PM10, and PM2.5) has been associated with respiratory risk. However, evidence on the risk of chronic obstructive pulmonary disease (COPD) exacerbations is still limited. The present study aimed at evaluating the associations between short-term exposure to major air pollutants and the risk of COPD exacerbations. After 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 I(2). In total, 59 studies were included. In the single-pollutant model, the risks of COPD were calculated by each 10 μg/m(3) increase in pollutant concentrations, with the exception of CO (100 μg/m(3)). There was a significant association between short-term exposure and COPD exacerbation risk for all the gaseous and particulate pollutants. The associations were strongest at lag0 and lag3 for gaseous and particulate air pollutants, respectively. The subgroup analysis not only further confirmed the overall adverse effects but also reduced the heterogeneities obviously. When 100% exposure was assumed, PAFs ranged from 0.60% to 4.31%, depending on the pollutants. The adverse health effects of SO2 and NO2 exposure were more significant in low-/middle-income countries than in high-income countries: SO2, relative risk: 1.012 (95% confidence interval: 1.001, 1.023); and NO2, relative risk: 1.019 (95% confidence interval: 1.014, 1.024). Short-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.

Twitter Demographics

The data shown below were collected from the profiles of 14 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 169 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 1 <1%
Unknown 168 99%

Demographic breakdown

Readers by professional status Count As %
Student > Master 25 15%
Researcher 25 15%
Student > Ph. D. Student 22 13%
Student > Bachelor 17 10%
Student > Doctoral Student 12 7%
Other 37 22%
Unknown 31 18%
Readers by discipline Count As %
Medicine and Dentistry 63 37%
Environmental Science 18 11%
Pharmacology, Toxicology and Pharmaceutical Science 9 5%
Nursing and Health Professions 8 5%
Agricultural and Biological Sciences 7 4%
Other 25 15%
Unknown 39 23%

Attention Score in Context

This research output has an Altmetric Attention Score of 14. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 18 January 2021.
All research outputs
#1,688,290
of 18,240,594 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#178
of 2,041 outputs
Outputs of similar age
#47,674
of 400,711 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#13
of 91 outputs
Altmetric has tracked 18,240,594 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 90th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,041 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.9. This one has done particularly well, scoring higher than 91% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 400,711 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 88% of its contemporaries.
We're also able to compare this research output to 91 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 86% of its contemporaries.