Evidence map›Paper›PMID 31832430›Full record

ArticleERJ open research2019

Prevalence of comorbidities and impact on pulmonary rehabilitation outcomes.

Stacey J Butler, Lok Sze Katrina Li, Lauren Ellerton, Andrea S Gershon, Roger S Goldstein, Dina Brooks

Open access · goldAbstract read
In one paragraph

Article in ERJ open research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Patient Characteristics and Outcomes by Sex and Smoking Status in Pulmonary and Cardiac Rehabilitation.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Current developments and future directions in COPD.European respiratory review : an official journal of the European Respiratory Society · 2020
    Article
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Stacey J ButlerDept of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada.ORCID https://orcid.org/0000-0002-6259-8859
Lok Sze Katrina LiDept of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada.ORCID https://orcid.org/0000-0001-5931-9567
Lauren EllertonDept of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada.
Andrea S GershonDept of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada.ORCID https://orcid.org/0000-0002-0246-594X
Roger S GoldsteinDept of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada.ORCID https://orcid.org/0000-0002-4236-043X
Dina BrooksDept of Respiratory Medicine, West Park Healthcare Centre, Toronto, ON, Canada.
University of Toronto · CAWest Park Healthcare Centre · CAUniversity of South Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe presence of comorbid conditions could impact performance in pulmonary rehabilitation (PR) programmes. We aimed to compare the comorbidity prevalence among those with chronic obstructive pulmonary disease (COPD) and interstitial lung disease (ILD) and evaluate the impact on PR response.

methodsWe performed a retrospective cohort study, recording comorbidities for all patients with COPD or ILD referred to PR. Participants were classified as responders to PR if they met the minimal important difference for exercise capacity and health-related quality of life (HRQoL). The prevalence of comorbidities and impact on PR outcomes were compared by lung disease and by sex using a univariate analysis and multivariate logistic regression.

resultsThe mean number of comorbidities was similar among those with COPD (3.3±2.1, n=242) and ILD (3.2±1.9, n=66) (p>0.05). Females had a higher number of comorbidities than males in both COPD (p=0.001) and ILD (p=0.017) populations. Circulatory (64%) and endocrine/metabolic (45%) conditions were most common in COPD. In ILD, digestive (55%) and circulatory (53%) comorbidities were most prevalent. In people with ILD, those over 65 years, with musculoskeletal/connective tissue disease or circulatory disease were less likely to obtain meaningful improvements in exercise capacity. There was no impact of comorbidities on exercise capacity in COPD or on HRQoL in ILD.

conclusionsThe majority of patients with COPD or ILD enrolled in PR programmes have multiple comorbidities that may affect improvements in exercise capacity. PR programmes may be less effective for older adults with ILD and comorbid circulatory or musculoskeletal disease.

Identifiers

PMID31832430
PMCPMC6899339
OpenAlexW2992207980

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.