Evidence map›Paper›PMID 32466105›Full record

ArticleCancers2020

Cigarette Smoking Is Associated with Increased Risk of Malignant Gliomas: A Nationwide Population-Based Cohort Study.

Stephen Ahn, Kyung-Do Han, Yong-Moon Park, Jung Min Bae, Sang Uk Kim, Sin-Soo Jeun, Seung Ho Yang

Open access · goldAbstract read
In one paragraph

Article in Cancers, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

13 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Assessment of the Type and Degree of Genomic Instability in Gliomas.International journal of molecular sciences · 2026
    Article
  3. Article
  4. Environmental Hazards and Glial Brain Tumors: Association or Causation?International journal of molecular sciences · 2025
    Review
  5. Article
  6. Article
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  8. 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

7 authors at 4 institutions in 2 countries.

Stephen AhnDepartment of Neurosurgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea.
Kyung-Do HanStatistics and Actuarial Science, Soongsil University, Seoul 06978, Korea.
Yong-Moon ParkEpidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA.
Jung Min BaeDepartment of Dermatology, St. Vincent's Hospital College of Medicine, The Catholic University of Korea, Seoul 16247, Korea.
Sang Uk KimMyoungJi St. Mary's Hospital, Seoul 07417, Korea.
Sin-Soo JeunDepartment of Neurosurgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea.
Seung Ho YangDepartment of Neurosurgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon 16247, Korea.ORCID 0000-0002-3490-1064
The Catholic University of Korea Seoul St. Mary's Hospital · KRThe Catholic University of Korea St. Vincent's Hospital · KRNational Institutes of Health · USSoongsil University · KR

Funding

Bio and Medical Technology Development Program of the National Research Foundation funded by the Ministry of Science and ICT at South Korea NRF- 2020M3A9E8024875
6 · The paper itself

Abstract

The association between cigarette smoking and the risk of developing malignant glioma (MG) remains unclear. We aimed to evaluate this potential association in a large general population, using a well-established and validated longitudinal nationwide database. Using data from the Korean National Health Insurance System cohort, 9,811,768 people over 20 years old without any cancer history in 2009 were followed until the end of 2017. We documented 6100 MG cases (ICD-10 code C71) during the median follow-up period of 7.31 years. Current smokers had a higher risk of developing MG (HR = 1.22, CI: 1.13-1.32) compared with never-smokers, after adjusting for confounders. This association was stronger for those who smoked ≥ 20 cigarettes daily (HR = 1.50, CI: 1.36-1.64). Furthermore, having 30 or more pack-years of smoking over the course of one's lifetime was associated with an increased risk of developing MG in a dose-dependent manner, compared with never-smokers (HR = 1.31, CI: 1.16-1.48 for 30-39 pack-years of smoking; HR = 1.36, CI: 1.17-1.59 for 40-49 pack-years of smoking; HR = 1.68; CI: 1.44-1.95 for ≥ 50 pack-years of smoking). These results suggest that cigarette smoking may be associated with developing MG. Further prospective studies could help elucidate this association.

Indexed as

epidemiologic studiesgliomapopulationrisk factorssmoking

Identifiers

PMID32466105
PMCPMC7280985
OpenAlexW3026100268

What OpenQuestion holds

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LicenceCC BY
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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.