Evidence map›Paper›PMID 30318865›Full record

ArticleCancer medicine2018

Smoking is associated with increased risk of myeloproliferative neoplasms: A general population-based cohort study.

Kasper M Pedersen, Marie Bak, Anders L Sørensen, Ann-Dorthe Zwisler, Christina Ellervik, Morten K Larsen, Hans C Hasselbalch, Janne S Tolstrup

Open access · goldAbstract read
In one paragraph

Article in Cancer medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 6% 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

32 citing papers in PubMed, 2 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
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  8. Polycythaemia vera.Nature reviews. Disease primers · 2025
    Review
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  20. Inflammation in Myeloid Malignancies: From Bench to Bedside.Journal of immunotherapy and precision oncology · 2021
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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 3 institutions in 2 countries.

Kasper M PedersenDepartment of Hematology, Zealand University Hospital, University of Copenhagen, Roskilde, Denmark.ORCID 0000-0001-9229-4859
Marie BakDepartment of Hematology, Zealand University Hospital, University of Copenhagen, Roskilde, Denmark.
Anders L SørensenDepartment of Hematology, Zealand University Hospital, University of Copenhagen, Roskilde, Denmark.
Ann-Dorthe ZwislerREHPA, Danish Knowledge Centre for Rehabilitation and Palliative Care, University of Southern Denmark and Odense University Hospital, Nyborg, Denmark.
Christina EllervikDivision of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
Morten K LarsenDepartment of Hematology, Zealand University Hospital, University of Copenhagen, Roskilde, Denmark.
Hans C HasselbalchDepartment of Hematology, Zealand University Hospital, University of Copenhagen, Roskilde, Denmark.ORCID 0000-0003-3936-8032
Janne S TolstrupNational Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark.
University of Copenhagen · DKUniversity of Southern Denmark · DKRoskilde University · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFormer studies on smoking as a risk factor for Philadelphia-negative myeloproliferative neoplasms (MPNs) have mainly been carried out in women's cohorts and studies with various definitions of MPNs. Herein, we conducted a cohort study with register-based follow-up of a general population from Denmark, to validate and substantiate prior observations.

methodsIn the Danish Health Examination Survey cohort, we used the Cox proportional-hazards model adjusted for age, sex, body mass index, and level of education, to calculate hazard ratios (HRs), to investigate, whether daily smokers or occasional/ex-smokers had an increased risk of MPNs compared to never-smokers.

resultsFrom the time of data collection (September 2007 to October 2008) until 1 January 2015, 70 individuals were diagnosed with MPNs among 75 896 study participants. Similar results were observed in both the age and sex adjusted analysis and the multivariable analysis. The multivariable HR of any MPN diagnosis for daily smokers was 2.5 (95% CI: 1.3-5.0). For essential thrombocytosis, polycythemia vera, myelofibrosis, and MPN-unclassified, the HRs were 1.8 (95% CI: 0.5-5.8), 1.7 (95% CI: 0.5-5.8), 4.3 (95% CI: 0.9-19), and 6.2 (95% CI: 1.5-25), respectively. Among occasional/ex-smokers the corresponding HRs were 1.9 (95% CI: 1.1-3.3), 1.5 (95% CI: 0.6-3.7), 0.8 (95% CI: 0.3-2.4), 0.9 (95% CI: 0.2-4.4), and 6.2 (95% CI: 1.8-21). Participants, who smoked >15 g/day, had an overall HR of 3.4 (95% CI: 1.4-8.2) for any MPN diagnosis, while participants who smoked ≤15 g/day, had an overall HR of 2.1 (95% CI: 0.9-4.7).

conclusionSmoking was associated with MPN development when comparing smokers and never-smokers. Further studies investigating smoking in MPNs are warranted to substantiate our findings.

Indexed as

AdultAgedAged, 80 and overCohort StudiesDenmarkFemaleHumansMaleMiddle AgedMyeloproliferative DisordersProportional Hazards ModelsRegistriesRisk FactorsSmokingYoung Adultepidemiologyessential thrombocythemiamyeloproliferative neoplasmspolycythemia veraprimary myelofibrosistobacco smoking

Identifiers

PMID30318865
PMCPMC6246929
OpenAlexW2897414004

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.