Evidence map›Paper›PMID 33785505›Full record

ArticleBMJ open respiratory research2021

Disease burden and quality of life of patients with chronic cough in Japan: a population-based cross-sectional survey.

Takekazu Kubo, Keisuke Tobe, Kotoba Okuyama, Masashi Kikuchi, Yirong Chen, Jonathan Schelfhout, Machiko Abe, Shigeru Tokita

Open access · goldAbstract read
In one paragraph

Article in BMJ open respiratory research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 3 pooled it
7.0field-weighted citation impact, top 2% 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

41 citing papers in PubMed, 3 syntheses or guidelines pooled it, 58 citations in OpenAlex.

  1. Chronic cough: more than just a persistent cough: a systematic literature review to understand the impact of chronic cough on quality of life.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2024
    Pooled it
  2. Efficacy and safety of gefapixant for chronic cough: a meta-analysis of randomised controlled trials.European respiratory review : an official journal of the European Respiratory Society · 2023
    Pooled it
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  13. WAO - ARIA consensus on chronic cough: Executive summary.The World Allergy Organization journal · 2025
    Review
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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

8 authors at 2 institutions in 2 countries.

Takekazu KuboMSD KK, Chiyoda-ku, Tokyo, Japan.
Keisuke TobeMSD KK, Chiyoda-ku, Tokyo, Japan keisuke.tobe@merck.com.
Kotoba OkuyamaMSD KK, Chiyoda-ku, Tokyo, Japan.
Masashi KikuchiMSD KK, Chiyoda-ku, Tokyo, Japan.
Yirong ChenKantar Health Inc, Singapore.
Jonathan SchelfhoutMerck & Co Inc, Kenilworth, New Jersey, USA.
Machiko AbeMSD KK, Chiyoda-ku, Tokyo, Japan.
Shigeru TokitaMSD KK, Chiyoda-ku, Tokyo, Japan.
MSD K.K. (Japan) · JPMerck & Co., Inc., Rahway, NJ, USA (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCough lasting 3-8 and >8 weeks are defined as subacute/prolonged cough and chronic cough (CC), respectively. Studies have revealed that CC negatively impact patients' quality of life (QoL). In Japan, there is limited data on the impact of CC on health-related quality of life (HRQoL), work productivity and activity impairment (WPAI) and healthcare resource utilisation (HRU) using validated instruments. This study aimed to estimate the burden of CC and to compare the burden among patients with CC between subgroups.

methodsData from two cross-sectional online surveys conducted between September and November 2019 were combined for the analysis. Eligible patients with cough were propensity score matched to non-cough respondents. Comparisons of general HRQoL, WPAI, HRU and other symptoms experienced were conducted between matched non-cough respondents and patients with cough. Among patients with CC, subgroup comparisons were performed to understand general HRQoL, WPAI, HRU, cough-related QoL (Leicester Cough Questionnaire and Hull Airway Reflux Questionnaire) between patients with CC of different severities, patients with refractory CC and patients with non-refractory CC and patients with CC whose underlying diseases were unknown and others.

resultsPatients with CC (n=568) in Japan reported significantly poorer HRQoL, increased WPAI, more HRU and higher proportion of psychological and sleep problems, compared with matched non-cough respondents selected from 21 415 non-cough respondents. More patients with severe CC reported significantly poorer HRQoL, increased WPAI and worse cough-related QoL. Patients with refractory CC experienced significantly greater burden measured by cough-related QoL. No significant differences were observed between patients with CC whose underlying diseases were unknown and other patients with CC in terms of general HRQoL and cough-related QoL.

conclusionsThis study showed that patients with CC in Japan experienced significant burden compared with non-cough respondents. Patients with more severe cough and refractory CC experienced worse cough-related QoL. These results highlighted the unmet need for better interventions and treatments to reduce the burden among patients with CC.

Indexed as

Cost of IllnessQuality of LifeCoughCross-Sectional StudiesHealth SurveysHumansJapancough/mechanisms/pharmacology

Identifiers

PMID33785505
PMCPMC8011713
OpenAlexW3143506944

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.