Evidence map›Paper›PMID 24763942›Full record

ArticleChest2014

The association of weight with the detection of airflow obstruction and inhaled treatment among patients with a clinical diagnosis of COPD.

Bridget F Collins, David Ramenofsky, David H Au, Jun Ma, Jane E Uman, Laura C Feemster

Open access · bronzeAbstract readComparative StudyMulticenter Study
In one paragraph

Article in Chest, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 9% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Guideline
  2. Article
  3. The effect of a post-bronchodilator FEVRespiratory research · 2025
    Article
  4. Review
  5. Article
  6. Review
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  12. Article
  13. Observational
  14. Review
  15. Article
  16. Article
  17. Review
  18. Overdiagnosis of COPD in hospitalized patients.International journal of chronic obstructive pulmonary disease · 2017
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Bridget F CollinsHealth Services Research and Development, Department of Veterans Affairs, Seattle, WA. Electronic address: bfc3@uw.edu.
David RamenofskyDivision of Pulmonary and Critical Care, Department of Medicine, University of Washington, Seattle, WA.
David H AuHealth Services Research and Development, Department of Veterans Affairs, Seattle, WA.
Jun MaDepartment of Health Services Research, Palo Alto Medical Foundation Research Institute, and Stanford Prevention Research Center, Stanford University School of Medicine, Palo Alto, CA.
Jane E UmanHealth Services Research and Development, Department of Veterans Affairs, Seattle, WA.
Laura C FeemsterHealth Services Research and Development, Department of Veterans Affairs, Seattle, WA.
Health Services Research & Development · USStanford University · USUniversity of Washington · US

Funding

RESPIRATORY RESEARCH TRAINING PROGRAMT32HL007287 · NHLBI · UNIVERSITY OF WASHINGTON · PI Kristina Anne Crothers, David J. Horne · 1985 to 2026
$16.7M
Facilitating adoption of COPD evidence-based care in outpatient settings (FACES)K23HL111116 · NHLBI · UNIVERSITY OF WASHINGTON · PI FEEMSTER, LAURA CECERE · 2013 to 2017
$481k
NHLBI NIH HHS K23 HL111116NHLBI NIH HHS T32 HL007287NHLBI NIH HHS T32-HL-007287PHS HHS K23
6 · The paper itself

Abstract

backgroundMost patients with a clinical diagnosis of COPD have not had spirometry to confirm airflow obstruction (AFO). Overweight and obese patients report more dyspnea than normal weight patients, which may be falsely attributed to AFO. We sought to determine whether overweight and obese patients who received a clinical diagnosis of COPD were more likely to receive a misdiagnosis (ie, lack of AFO on spirometry) and be subsequently treated with inhaled medications.

methodsThe cohort comprised US veterans with COPD (International Classification of Diseases, 9th Revision, code; inhaled medication use; or both) and spirometry measurements from one of three Pacific Northwest Veterans Administration Medical Centers. The measured exposures were overweight and obesity (defined by BMI categories). Outcomes were (1) AFO on spirometry and (2) escalation or deescalation of inhaled therapies from 3 months before spirometry to 9 to 12 months after spirometry. We used multivariable logistic regression with calculation of adjusted proportions for all analyses.

resultsFifty-two percent of 5,493 veterans who had received a clinical diagnosis of COPD had AFO. The adjusted proportion of patients with AFO decreased as BMI increased (P < .01 for trend). Among patients without AFO, those who were overweight and obese were less likely to remain off medications or to have therapy deescalated (adjusted proportions: normal weight, 0.69 [95% CI, 0.64-0.73]; overweight, 0.62 [95% CI, 0.58-0.65; P = .014]; obese, 0.60 [95% CI, 0.57-0.63; P = .001]).

conclusionsOverweight and obese patients are more likely to be given a misdiagnosis of COPD and not have their inhaled medications deescalated after spirometry demonstrated no AFO. Providers may be missing potential opportunities to recognize and treat other causes of dyspnea in these patients.

Indexed as

Administration, InhalationAgedAirway ObstructionBody Mass IndexBronchodilator AgentsCohort StudiesDiagnostic ErrorsHospitals, VeteransHumansMaleMiddle AgedObesityOverweightPulmonary Disease, Chronic ObstructiveReference ValuesRetrospective StudiesBronchodilator Agents

Identifiers

PMID24763942
PMCPMC4251614
OpenAlexW1990340200

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.