Evidence map›Paper›PMID 39019624›Full record

Observational studyBMJ open respiratory research2024

Risk factors of acute exacerbation and disease progression in young patients with COPD.

Juye Bae, Hyo Jin Lee, Kwang Yong Choi, Jung-Kyu Lee, Tae Yun Park, Eun Young Heo, Chang Hoon Lee, Deog Kyeom Kim, Hyun Woo Lee

Abstract readObservational Study
In one paragraph

Observational study in BMJ open respiratory research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

16 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Definitions of early COPD and predictors for disease progression: a systematic review.European respiratory review : an official journal of the European Respiratory Society · 2026
    Pooled it
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  4. Review
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  14. Risk Factors of FEV₁/FVC Decline in COPD Patients.Journal of Korean medical science · 2025
    Observational
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  16. 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

9 authors.

Juye BaeDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Jongno-gu, Seoul, Korea (the Republic of).
Hyo Jin LeeDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Dongjak-gu, Seoul, Korea (the Republic of).
Kwang Yong ChoiDivision of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang-si, Korea (the Republic of).
Jung-Kyu LeeDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Dongjak-gu, Seoul, Korea (the Republic of).
Tae Yun ParkDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Dongjak-gu, Seoul, Korea (the Republic of).
Eun Young HeoDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Dongjak-gu, Seoul, Korea (the Republic of).
Chang Hoon LeeDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Jongno-gu, Seoul, Korea (the Republic of).
Deog Kyeom KimDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Dongjak-gu, Seoul, Korea (the Republic of).
Hyun Woo LeeDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Seoul Metropolitan Government Boramae Medical Center, Dongjak-gu, Seoul, Korea (the Republic of) athrunzara86@gmail.com.ORCID http://orcid.org/0000-0003-4379-0260

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe aimed to elucidate the clinical factors associated with acute exacerbation and disease progression in young patients with chronic obstructive pulmonary disease (COPD).

methodsThis retrospective longitudinal observational study included patients with COPD aged between 20 and 50 years with post-bronchodilator forced expiratory volume in one second (FEV

resultsA total of 342 patients were followed up during a median of 64 months. In multivariable analyses, risk factors for moderate-to-severe exacerbation were history of asthma (adjusted HR (aHR)=2.999, 95% CI=[2.074-4.335]), emphysema (aHR=1.951, 95% CI=[1.331-2.960]), blood eosinophil count >300/µL (aHR=1.469, 95% CI=[1.038-2.081]) and low FEV

conclusionsIn young COPD patients, specific high-risk features of acute exacerbation and disease progression need to be identified, including a history of previous respiratory diseases, current respiratory symptoms, blood eosinophil counts, and structural or functional pulmonary impairment.

Indexed as

Disease ProgressionPulmonary Disease, Chronic ObstructiveAdultAsthmaBronchodilator AgentsEosinophilsFemaleForced Expiratory VolumeHumansLongitudinal StudiesMaleMiddle AgedRetrospective StudiesRisk FactorsSpirometryVital CapacityBronchodilator AgentsCOPD ExacerbationsCOPD PharmacologyEmphysemaPulmonary Disease, Chronic Obstructive

Identifiers

PMID39019624
PMCPMC11256056

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.