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COPD in primary lung cancer patients: prevalence and mortality

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

  • In the top 5% of all research outputs scored by Altmetric
  • Among the highest-scoring outputs from this source (#48 of 1,812)
  • High Attention Score compared to outputs of the same age (92nd percentile)
  • High Attention Score compared to outputs of the same age and source (95th percentile)

Mentioned by

news
2 news outlets
twitter
9 tweeters

Citations

dimensions_citation
20 Dimensions

Readers on

mendeley
32 Mendeley
Title
COPD in primary lung cancer patients: prevalence and mortality
Published in
International Journal of Chronic Obstructive Pulmonary Disease, March 2016
DOI 10.2147/copd.s101183
Pubmed ID
Authors

Elinor Ytterstad, Per Moe, Audhild Hjalmarsen

Abstract

Previous studies have relied on international spirometry criteria to diagnose COPD in patients with lung cancer without considering the effect lung cancer might have on spirometric results. The aim of this study was to examine the prevalence of COPD and emphysema at the time of primary lung cancer diagnosis and to examine factors associated with survival. Medical records, pulmonary function tests, and computed tomography scans were used to determine the presence of COPD and emphysema in patients diagnosed with primary lung cancer at the University Hospital of North Norway in 2008-2010. Among the 174 lung cancer patients, 69% had COPD or emphysema (39% with COPD, 59% with emphysema; male:female ratio 101:73). Neither COPD nor emphysema were significantly associated with lung cancer mortality, whereas patients with non-small-cell lung cancer other than adenocarcinoma and squamous cell carcinoma had a risk of lung cancer mortality that was more than four times higher than that of patients with small-cell lung cancer (hazard ratio [HR] 4.19, 95% confidence interval [CI] 1.56-11.25). Females had a lower risk of lung cancer mortality than males (HR 0.63, 95% CI 0.42-0.94), and patients aged ≥75 years had a risk that was twice that of patients aged <75 years (HR 2.48, 95% CI 1.59-3.87). Low partial arterial oxygen pressure (4.0-8.4 kPa) increased the risk of lung cancer mortality (HR 2.26, 95% CI 1.29-3.96). So did low partial arterial carbon dioxide pressure (3.0-4.9 kPa) among stage IV lung cancer patients (HR 2.23, 95% CI 1.29-3.85). Several patients with respiratory failure had previously been diagnosed with COPD. The observed prevalence of COPD was lower than that in previous studies. Neither COPD nor emphysema were significantly associated with lung cancer mortality.

Twitter Demographics

The data shown below were collected from the profiles of 9 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 32 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 32 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 7 22%
Student > Ph. D. Student 6 19%
Researcher 6 19%
Student > Doctoral Student 3 9%
Other 2 6%
Other 6 19%
Unknown 2 6%
Readers by discipline Count As %
Medicine and Dentistry 14 44%
Agricultural and Biological Sciences 4 13%
Biochemistry, Genetics and Molecular Biology 2 6%
Computer Science 2 6%
Sports and Recreations 1 3%
Other 2 6%
Unknown 7 22%

Attention Score in Context

This research output has an Altmetric Attention Score of 27. 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 20 August 2018.
All research outputs
#753,160
of 15,340,393 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#48
of 1,812 outputs
Outputs of similar age
#19,515
of 266,875 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#3
of 67 outputs
Altmetric has tracked 15,340,393 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 95th percentile: it's in the top 5% 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 97% 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 266,875 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 92% of its contemporaries.
We're also able to compare this research output to 67 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 95% of its contemporaries.