Evidence map›Paper›PMID 29881269›Full record

ArticleInternational journal of chronic obstructive pulmonary disease2018

Chronic cough as a novel phenotype of chronic obstructive pulmonary disease.

Hyeon-Kyoung Koo, Sung-Woo Park, Jeong-Woong Park, Hye Sook Choi, Tae-Hyung Kim, Hyoung Kyu Yoon, Kwang Ha Yoo, Ki-Suck Jung, Deog Kyeom Kim

Abstract readMulticenter Study
In one paragraph

Article in International journal of chronic obstructive pulmonary disease, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–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

14 citing papers in PubMed.

  1. Trial
  2. Observational
  3. Review
  4. Article
  5. CT airway remodelling and chronic cough.BMJ open respiratory research · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Sinonasal Symptoms in COPD: Burden and Associations with Clinical Markers of Disease.International journal of chronic obstructive pulmonary disease · 2022
    Article
  12. Review
  13. Article
  14. Observational
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.

Hyeon-Kyoung KooDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Ilsan, Republic of Korea.
Sung-Woo ParkDivision of Allergy and Respiratory Medicine, Department of Internal Medicine, Soon Chun Hyang University Bucheon Hospital, Bucheon, Republic of Korea.
Jeong-Woong ParkDepartment of Pulmonary and Critical Care Medicine, Gachon University, Gil Medical Center, Incheon, Republic of Korea.
Hye Sook ChoiDivision of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Republic of Korea.
Tae-Hyung KimDivision of Pulmonary and Critical Care Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Republic of Korea.
Hyoung Kyu YoonDepartment of Internal Medicine, The Catholic University of Korea, Yeouido St Mary's Hospital, Seoul, Republic of Korea.
Kwang Ha YooDivision of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Republic of Korea.
Ki-Suck JungDivision of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Republic of Korea.
Deog Kyeom KimDivision of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and purpose: Chronic cough can be a dominant symptom of chronic obstructive pulmonary disease (COPD), although its clinical impact remains unclear. The aim of our study was to identify phenotypic differences according to the presence of chronic cough or sputum and evaluate the impact of chronic cough on the risk of acute exacerbation of COPD (AECOPD). Methods: In a nationwide COPD cohort including 1,613 COPD patients, patients with chronic cough only, those with sputum only, those with chronic bronchitis (CB), and those without cough and sputum were compared with regard to dyspnea, lung function, quality of life (QoL), and risk of AECOPD. Results: The rates of chronic cough, chronic sputum, and both were 23.4%, 32.4%, and 18.2%, respectively. Compared with patients without chronic cough, those with chronic cough exhibited a lower forced expiratory volume in 1 second (% predicted) and diffusing capacity of the lungs for carbon monoxide (% predicted), more frequent AECOPD, more severe dyspnea, and worse QoL. Pulmonary function, dyspnea severity, and QoL worsened in the following order: without cough or sputum, with sputum only, with cough only, and with CB. Multivariate analyses revealed chronic cough as an independent risk factor for a lower lung function, more severe dyspnea, and a poor QoL. Moreover, the risk of future AECOPD was significantly associated with chronic cough (odds ratio 1.56, 95% CI 1.08-2.24), but not with chronic sputum. Conclusion: Our results suggest that chronic cough should be considered as an important phenotype during the determination of high-risk groups of COPD patients.

Indexed as

Disease ProgressionSputumAgedBronchitis, ChronicChronic DiseaseCohort StudiesCoughDyspneaForced Expiratory VolumeHumansMaleMultivariate AnalysisPhenotypePulmonary Disease, Chronic ObstructiveQuality of LifeRepublic of Koreachronic obstructivecoughexacerbationpulmonary diseaseseverity

Identifiers

PMID29881269
PMCPMC5985853

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Registered trials

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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.