Evidence map›Paper›PMID 30420617›Full record

ArticleBritish journal of cancer2018

Smoking cessation sharply reduced lung cancer mortality in a historical cohort of 3185 Chinese silicotic workers from 1981 to 2014.

Lap Ah Tse, Xiaona Lin, Wentao Li, Hong Qiu, Chi Kuen Chan, Feng Wang, Ignatius Tak-Sun Yu, Chi Chiu Leung

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
1.3field-weighted citation impact, top 18% 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

12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 25 citations in OpenAlex.

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  12. Unfavorable Mortality-To-Incidence Ratio of Lung Cancer Is Associated with Health Care Disparity.International journal of environmental research and public health · 2018
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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 4 institutions in 2 countries.

Lap Ah TseJC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China. shelly@cuhk.edu.hk.
Xiaona LinJC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China.
Wentao LiJC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China.
Hong QiuSchool of Public Health, The University of Hong Kong, Hong Kong SAR, China.
Chi Kuen ChanPneumoconiosis Clinic, Tuberculosis and Chest Service, Department of Health, Hong Kong SAR, China.
Feng WangJC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China.
Ignatius Tak-Sun YuJC School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong SAR, China.
Chi Chiu LeungStanley Ho Centre for Emerging Infectious Diseases, the Chinese University of Hong Hong, Hong Kong SAR, China.
Chinese University of Hong Kong · CNDepartment of Health · CNSouth China University of Technology · CNUniversity of Hong Kong · HK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPopulation-based studies showed an over 50% decrease in lung cancer risk after quitting smoking for 5-6 years, but the beneficial effect in silicotics remains unknown. We aimed to rectify this knowledge gap using a large historical cohort of 3185 Chinese silicotics since 1981 and followed-up till 2014.

methodsBaseline information on workers' socio-demographics, smoking habits, occupational history, and medical history was collected. Smoking status was reassessed during follow-up. Multiple Cox proportional hazards model was performed to evaluate the impact of smoking cessation on lung cancer mortality.

resultsOverall, 1942 deaths occurred and 188 lung cancer deaths were identified. Compared with never quitters, silicotics who were new quitters had almost halved their lung cancer risk [hazard ratio (HR) = 0.51, 95%CI: 0.34-0.76], while persistent quitters had a 53% risk reduction (HR = 0.47, 95%CI: 0.33-0.66). Lung cancer mortality approximately halved after quitting smoking for 10 years. While the risk kept decreasing with years since cessation, it did not reverse back to that of never smokers. Persistent quitters with small opacities tended to have higher beneficial effects than those with large opacities.

conclusionsSmoking cessation for 10 years halved lung cancer mortality among silicotics, while the beneficial effect was prominent for patients with small opacities.

Indexed as

Smoking CessationAdultAgedAged, 80 and overChinaCohort StudiesHumansLung NeoplasmsMiddle AgedOccupational DiseasesProportional Hazards ModelsSilicosisTime Factors

Identifiers

PMID30420617
PMCPMC6288151
OpenAlexW2900317302

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.