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Prevalence of chronic obstructive pulmonary disease in asymptomatic smokers

Overview of attention for article published in International Journal of Chronic Obstructive Pulmonary Disease, November 2015
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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 (91st percentile)
  • High Attention Score compared to outputs of the same age and source (91st percentile)

Mentioned by

news
1 news outlet
twitter
16 tweeters
facebook
1 Facebook page

Citations

dimensions_citation
9 Dimensions

Readers on

mendeley
28 Mendeley
Title
Prevalence of chronic obstructive pulmonary disease in asymptomatic smokers
Published in
International Journal of Chronic Obstructive Pulmonary Disease, November 2015
DOI 10.2147/copd.s91742
Pubmed ID
Authors

Raúl Sansores, Alejandra Ramírez-Venegas, Oliver Pérez-Bautista, Ramcés Falfan-Valencia, Jaime Villalba-Caloca, Monica Velázquez-Uncal

Abstract

Physicians do not routinely recommend smokers to undergo spirometry unless they are symptomatic. To test the hypothesis that there are a significant number of asymptomatic smokers with chronic obstructive pulmonary disease (COPD), we estimated the prevalence of COPD in a group of asymptomatic smokers. Two thousand nine hundred and sixty-one smokers with a cumulative consumption history of at least 10 pack-years, either smokers with symptoms or smokers without symptoms (WOS) were invited to perform a spirometry and complete a symptom questionnaire. Six hundred and thirty-seven (21.5%) smokers had no symptoms, whereas 2,324 (78.5%) had at least one symptom. The prevalence of COPD in subjects WOS was 1.5% when considering the whole group of smokers (45/2,961) and 7% when considering only the group WOS (45/637). From 329 smokers with COPD, 13.7% were WOS. Subjects WOS were younger, had better lung function and lower cumulative consumption of cigarettes, estimated as both cigarettes per day and pack-years. According to severity of airflow limitation, 69% vs 87% of subjects were classified as Global Initiative for Chronic Obstructive Lung Disease stages I-II in the WOS and smokers with symptoms groups, respectively (P<0.001). A multivariate analysis showed that forced expiratory volume in 1 second (mL) was the only predictive factor for COPD in asymptomatic smokers. Prevalence of COPD in asymptomatic smokers is 1.5%. This number of asymptomatic smokers may be excluded from the benefit of an "early" intervention, not just pharmacological but also from smoking cessation counseling. The higher forced expiratory volume in 1 second may contribute to prevent early diagnosis.

Twitter Demographics

The data shown below were collected from the profiles of 16 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 28 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 4%
Unknown 27 96%

Demographic breakdown

Readers by professional status Count As %
Student > Master 6 21%
Researcher 4 14%
Student > Doctoral Student 4 14%
Other 3 11%
Student > Ph. D. Student 2 7%
Other 5 18%
Unknown 4 14%
Readers by discipline Count As %
Medicine and Dentistry 10 36%
Agricultural and Biological Sciences 3 11%
Biochemistry, Genetics and Molecular Biology 3 11%
Nursing and Health Professions 1 4%
Pharmacology, Toxicology and Pharmaceutical Science 1 4%
Other 3 11%
Unknown 7 25%

Attention Score in Context

This research output has an Altmetric Attention Score of 19. 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 01 August 2016.
All research outputs
#1,034,137
of 15,340,588 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#80
of 1,812 outputs
Outputs of similar age
#25,719
of 286,407 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#6
of 73 outputs
Altmetric has tracked 15,340,588 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 93rd percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 1,812 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.4. This one has done particularly well, scoring higher than 95% 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 286,407 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 91% of its contemporaries.
We're also able to compare this research output to 73 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 91% of its contemporaries.