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Risk of community-acquired pneumonia in chronic obstructive pulmonary disease stratified by smoking status: a population-based cohort study in the United Kingdom

Overview of attention for article published in International Journal of Chronic Obstructive Pulmonary Disease, August 2017
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About this Attention Score

  • Above-average Attention Score compared to outputs of the same age (51st percentile)
  • Average Attention Score compared to outputs of the same age and source

Mentioned by

twitter
3 tweeters

Citations

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18 Dimensions

Readers on

mendeley
63 Mendeley
Title
Risk of community-acquired pneumonia in chronic obstructive pulmonary disease stratified by smoking status: a population-based cohort study in the United Kingdom
Published in
International Journal of Chronic Obstructive Pulmonary Disease, August 2017
DOI 10.2147/copd.s138435
Pubmed ID
Authors

Dionne CW Braeken, Gernot GU Rohde, Frits ME Franssen, Johanna HM Driessen, Tjeerd P van Staa, Patrick C Souverein, Emiel FM Wouters, Frank de Vries

Abstract

Smoking increases the risk of community-acquired pneumonia (CAP) and is associated with the development of COPD. Until now, it is unclear whether CAP in COPD is due to smoking-related effects, or due to COPD pathophysiology itself. To evaluate the association between COPD and CAP by smoking status. In total, 62,621 COPD and 191,654 control subjects, matched by year of birth, gender and primary care practice, were extracted from the Clinical Practice Research Datalink (2005-2014). Incidence rates (IRs) were estimated by dividing the total number of CAP cases by the cumulative person-time at risk. Time-varying Cox proportional hazard models were used to estimate the hazard ratios (HRs) for CAP in COPD patients versus controls. HRs of CAP by smoking status were calculated by stratified analyses in COPD patients versus controls and within both subgroups with never smoking as reference. IRs of CAP in COPD patients (32.00/1,000 person-years) and controls (6.75/1,000 person-years) increased with age and female gender. The risk of CAP in COPD patients was higher than in controls (HR 4.51, 95% CI: 4.27-4.77). Current smoking COPD patients had comparable CAP risk (HR 0.92, 95% CI: 0.82-1.02) as never smoking COPD patients (reference), whereas current smoking controls had a higher risk (HR 1.23, 95% CI: 1.13-1.34) compared to never smoking controls. COPD patients have a fourfold increased risk to develop CAP, independent of smoking status. Identification of factors related with the increased risk of CAP in COPD is warranted, in order to improve the management of patients at risk.

Twitter Demographics

The data shown below were collected from the profiles of 3 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 63 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 63 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 12 19%
Other 8 13%
Student > Ph. D. Student 8 13%
Student > Bachelor 7 11%
Student > Master 5 8%
Other 8 13%
Unknown 15 24%
Readers by discipline Count As %
Medicine and Dentistry 21 33%
Biochemistry, Genetics and Molecular Biology 4 6%
Nursing and Health Professions 4 6%
Pharmacology, Toxicology and Pharmaceutical Science 4 6%
Psychology 3 5%
Other 11 17%
Unknown 16 25%

Attention Score in Context

This research output has an Altmetric Attention Score of 2. 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 08 September 2017.
All research outputs
#7,065,845
of 12,519,766 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#790
of 1,526 outputs
Outputs of similar age
#121,989
of 263,900 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#34
of 59 outputs
Altmetric has tracked 12,519,766 research outputs across all sources so far. This one is in the 42nd percentile – i.e., 42% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,526 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.0. This one is in the 45th percentile – i.e., 45% of its peers scored the same or lower than it.
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 263,900 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 51% of its contemporaries.
We're also able to compare this research output to 59 others from the same source and published within six weeks on either side of this one. This one is in the 40th percentile – i.e., 40% of its contemporaries scored the same or lower than it.