Evidence map›Paper›PMID 34215828›Full record

ArticleNPJ digital medicine2021

Identifying acute exacerbations of chronic obstructive pulmonary disease using patient-reported symptoms and cough feature analysis.

Scott Claxton, Paul Porter, Joanna Brisbane, Natasha Bear, Javan Wood, Vesa Peltonen, Phillip Della, Claire Smith, Udantha Abeyratne

Open access · goldAbstract read
In one paragraph

Article in NPJ digital medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
2.9field-weighted citation impact, top 8% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 33 citations in OpenAlex.

  1. Audio-based digital biomarkers in diagnosing and managing respiratory diseases: a systematic review and bibliometric analysis.European respiratory review : an official journal of the European Respiratory Society · 2025
    Pooled it
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  10. Risk of Death and Cardiovascular Events Following an Exacerbation of COPD: The EXACOS-CV US Study.International journal of chronic obstructive pulmonary disease · 2024
    Article
  11. Phenotypes, Etiotypes, and Endotypes of Exacerbations of Chronic Obstructive Pulmonary Disease.American journal of respiratory and critical care medicine · 2023
    Review
  12. Review
  13. Article
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  16. Article
  17. Multimodal biomedical AI.Nature medicine · 2022
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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

9 authors at 5 institutions in 2 countries.

Scott ClaxtonJoondalup Health Campus, Joondalup, WA, Australia.
Paul PorterJoondalup Health Campus, Joondalup, WA, Australia. Paul.porter@curtin.edu.au.ORCID http://orcid.org/0000-0001-9051-589X
Joanna BrisbaneJoondalup Health Campus, Joondalup, WA, Australia.ORCID http://orcid.org/0000-0003-3364-5414
Natasha BearInstitute of Health Research, University of Notre Dame, Notre Dame, WA, Australia.
Javan WoodResApp Health, Brisbane, QLD, Australia.
Vesa PeltonenResApp Health, Brisbane, QLD, Australia.
Phillip DellaSchool of Nursing, Midwifery and Paramedicine, Curtin University, Bentley, WA, Australia.
Claire SmithJoondalup Health Campus, Joondalup, WA, Australia.
Udantha AbeyratneResApp Health, Brisbane, QLD, Australia.
Curtin University · AUEdith Cowan University · AUGenesis HealthCare · USQueensland University of Technology · AUThe University of Notre Dame Australia · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are commonly encountered in the primary care setting, though the accurate and timely diagnosis is problematic. Using technology like that employed in speech recognition technology, we developed a smartphone-based algorithm for rapid and accurate diagnosis of AECOPD. The algorithm incorporates patient-reported features (age, fever, and new cough), audio data from five coughs and can be deployed by novice users. We compared the accuracy of the algorithm to expert clinical assessment. In patients with known COPD, the algorithm correctly identified the presence of AECOPD in 82.6% (95% CI: 72.9-89.9%) of subjects (n = 86). The absence of AECOPD was correctly identified in 91.0% (95% CI: 82.4-96.3%) of individuals (n = 78). The diagnostic agreement was maintained in milder cases of AECOPD (PPA: 79.2%, 95% CI: 68.0-87.8%), who typically comprise the cohort presenting to primary care. The algorithm may aid early identification of AECOPD and be incorporated in patient self-management plans.

Identifiers

PMID34215828
PMCPMC8253790
OpenAlexW3175291108

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.