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Differential changes in quality of life components over 5 years in chronic obstructive pulmonary disease patients

Overview of attention for article published in International Journal of Chronic Obstructive Pulmonary Disease, April 2015
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About this Attention Score

  • Above-average Attention Score compared to outputs of the same age (53rd percentile)
  • Good Attention Score compared to outputs of the same age and source (67th percentile)

Mentioned by

twitter
4 tweeters

Citations

dimensions_citation
21 Dimensions

Readers on

mendeley
46 Mendeley
Title
Differential changes in quality of life components over 5 years in chronic obstructive pulmonary disease patients
Published in
International Journal of Chronic Obstructive Pulmonary Disease, April 2015
DOI 10.2147/copd.s77586
Pubmed ID
Authors

Katsura Nagai, Masaharu Nishimura, Hironi Makita, Masaru Suzuki, Kaoruko Shimizu, Satoshi Konno, Yoichi Ito

Abstract

The aim of the study was to examine the longitudinal change in quality of life components of patients with chronic obstructive pulmonary disease (COPD). In the Hokkaido COPD Cohort Study, 261 subjects were appropriately treated and followed over 5 years with a 74% follow-up rate at the end. The longitudinal changes in St George's Respiratory Questionnaire (SGRQ) scores were annually evaluated with forced expiratory volume in 1 second (FEV1). The subjects were classified into the rapid decliners, slow decliners, and sustainers based on AFEV1/year. The activity component of SGRQ generally deteriorated over time, and its annual decline was the greatest in the rapid decliners (<25th percentile). In contrast, the symptom component improved significantly year by year in the sustainers (>75 percentile), and it did not deteriorate even in the rapid decliners. Of the baseline data, predictors for worsening of the activity component were older age and lower body mass index. Larger reversibility was related to symptom component improvement. Of the follow-up data, AFEV1/year was the best predictor for worsening of the components of SGRQ. Continuous smoking was another factor for worsening of the activity component. For the symptom component, a history of exacerbation by admission definition was the determinant of its deterioration, whereas use of beta agonists was related to improvement. The longitudinal changes of quality of life and their determinants are markedly different and independent between its components. The activity component of SGRQ generally deteriorated over years, while the symptom component rather improved in some patients with COPD under appropriate treatment.

Twitter Demographics

The data shown below were collected from the profiles of 4 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 46 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 2%
Unknown 45 98%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 5 11%
Researcher 5 11%
Student > Doctoral Student 5 11%
Other 4 9%
Student > Master 4 9%
Other 10 22%
Unknown 13 28%
Readers by discipline Count As %
Medicine and Dentistry 20 43%
Biochemistry, Genetics and Molecular Biology 2 4%
Agricultural and Biological Sciences 2 4%
Psychology 2 4%
Nursing and Health Professions 1 2%
Other 5 11%
Unknown 14 30%

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 29 April 2015.
All research outputs
#9,003,538
of 15,689,103 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#961
of 1,842 outputs
Outputs of similar age
#105,667
of 235,775 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#11
of 40 outputs
Altmetric has tracked 15,689,103 research outputs across all sources so far. This one is in the 41st percentile – i.e., 41% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,842 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.5. 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 235,775 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 53% of its contemporaries.
We're also able to compare this research output to 40 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 67% of its contemporaries.