Evidence map›Paper›PMID 37394482›Full record

ArticleBMC pulmonary medicine2023

Smoking cessation after diagnosis of COPD is associated with lower all-cause and cause-specific mortality: a nationwide population-based cohort study of South Korean men.

Jang Ho Doo, Sung Min Kim, Young Jun Park, Kyae Hyung Kim, Yun Hwan Oh, Ji Soo Kim, Sang Min Park

Abstract read
In one paragraph

Article in BMC pulmonary medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 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

29 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  5. Premature mortality from respiratory disease attributable to PMInternational journal of occupational medicine and environmental health · 2026
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  13. Impact of Low-Dose Computed Tomography Findings on Cigarette Smoking Cessation Among High-Risk Adults Participating in Lung Cancer Screening.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2025
    Observational
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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

7 authors.

Jang Ho DooSeoul National University College of Medicine, Seoul, Republic of Korea.
Sung Min KimDepartment of Biomedical Science, Seoul National University Graduate School, Seoul, Republic of Korea.
Young Jun ParkMedical Research Center, Genomic Medicine Institute, Seoul National University, Seoul, Republic of Korea.
Kyae Hyung KimDepartment of Family Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
Yun Hwan OhDepartment of Family Medicine, Chung-Ang University Gwangmyeong Hospital, Chung-Ang University College of Medicine, Gwangmyeong-Si, Republic of Korea.
Ji Soo KimInternational Healthcare Center, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
Sang Min ParkDepartment of Family Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea. smpark.snuh@gmail.com.

Funding

National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) 2021R1F1A1063346
6 · The paper itself

Abstract

backgroundThe most effective way to halt the advancement of COPD is smoking cessation. However, limited data are available on the question of whether quitting smoking within two years after COPD diagnosis reduces the risk of mortality. The goal of our research was to analyze the relationship between quitting smoking after COPD diagnosis and the risks of all-cause and cause-specific mortality, using the Korean National Health Insurance Service (NHIS) database.

methodsThis study included 1,740 male COPD patients aged 40 years or more who had been newly diagnosed within the 2003-2014 time period and had smoked prior to their COPD diagnosis. The patients were categorized into two groups according to their smoking status after COPD diagnosis: (i) persistent smokers (ii) quitters (smoking cessation within two years of COPD diagnosis). Multivariate Cox proportional hazard regression was performed to determine the adjusted hazard ratio (HR) and 95% confidence interval (CI) for both all-cause and cause-specific mortality.

resultsAmong 1,740 patients (mean age, 64.6 years; mean follow-up duration, 7.6 years), 30.5% stopped smoking after COPD diagnosis. Quitters gained a 17% risk reduction in all-cause mortality (aHR, 0.83; 95% CI, 0.69-1.00) and a 44% risk reduction in cardiovascular mortality (aHR, 0.56; 95% CI, 0.33-0.95) compared with persistent smokers.

conclusionOur study found that patients who quit smoking within two years after COPD diagnosis had lower risks of all-cause and cardiovascular mortality relative to persistent smokers. These results can be used to encourage newly diagnosed COPD patients to stop smoking.

Indexed as

Cardiovascular DiseasesPulmonary Disease, Chronic ObstructiveSmoking CessationCause of DeathCohort StudiesHumansMaleMiddle AgedRepublic of KoreaRisk FactorsCOPDMortalityNewly diagnosed COPDQuitting smokingSmoking cessation

Identifiers

PMID37394482
PMCPMC10316560

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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.