Evidence map›Paper›PMID 29133597›Full record

ArticleOccupational and environmental medicine2018

Occupational exposure to asbestos and risk of cholangiocarcinoma: a population-based case-control study in four Nordic countries.

Andrea Farioli, Kurt Straif, Giovanni Brandi, Stefania Curti, Kristina Kjaerheim, Jan Ivar Martinsen, Pär Sparen, Laufey Tryggvadottir, Elisabete Weiderpass, Guido Biasco and 3 more

Abstract read
In one paragraph

Article in Occupational and environmental medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

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

  1. Cholangiocarcinoma Attributed to Occupation: A Systematic Reviews.Asian Pacific journal of cancer prevention : APJCP · 2022
    Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Environmental risk factors for liver cancer.Hepatology (Baltimore, Md.) · 2025
    Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Article
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  12. Article
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  14. Article
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  17. Surgical management of biliary malignancy.Current problems in surgery · 2021
    Article
  18. Article
  19. Cholangiocarcinoma 2020: the next horizon in mechanisms and management.Nature reviews. Gastroenterology & hepatology · 2020
    Review
  20. Review
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

13 authors.

Andrea FarioliDepartment of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy.
Kurt StraifInternational Agency for Research on Cancer, Lyon, France.
Giovanni BrandiDepartment of Experimental, Diagnostic, and Specialty Medicine, S. Orsola-Malpighi University Hospital, Bologna, Italy.
Stefania CurtiDepartment of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy.
Kristina KjaerheimDepartment of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway.
Jan Ivar MartinsenDepartment of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway.
Pär SparenDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Laufey TryggvadottirIcelandic Cancer Registry, Reykjavik, Iceland.
Elisabete WeiderpassDepartment of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway.
Guido BiascoDepartment of Experimental, Diagnostic, and Specialty Medicine, S. Orsola-Malpighi University Hospital, Bologna, Italy.
Francesco Saverio ViolanteDepartment of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy.
Stefano MattioliDepartment of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy.
Eero PukkalaFaculty of Social Sciences, University of Tampere, Tampere, Finland.

Funding

World Health Organization 001
6 · The paper itself

Abstract

objectivesTo assess the association between occupational exposure to asbestos and the risk of cholangiocarcinoma (CC).

methodsWe conducted a case-control study nested in the Nordic Occupational Cancer (NOCCA) cohort. We studied 1458 intrahepatic CC (ICC) and 3972 extrahepatic CC (ECC) cases occurring among subjects born in 1920 or later in Finland, Iceland, Norway and Sweden. Each case was individually matched by birth year, gender and country to five population controls. The cumulative exposure to asbestos (measured in fibres (f)/ml × years) was assessed by applying the NOCCA job-exposure matrix to data on occupations collected during national population censuses (conducted in 1960, 1970, 1980/81 and 1990). Odds ratios (OR) and 95% CI were estimated using conditional logistic regression models adjusted by printing industry work.

resultsWe observed an increasing risk of ICC with cumulative exposure to asbestos: never exposed, OR 1.0 (reference category); 0.1-4.9 f/mL × years, OR 1.1 (95% CI 0.9 to 1.3); 5.0-9.9 f/mL × years, OR 1.3 (95% CI 0.9 to 2.1); 10.0-14.9 f/mL × years, OR 1.6 (95% CI 1.0 to 2.5); ≥15.0 f/mL × years, OR 1.7 (95% CI 1.1 to 2.6). We did not observe an association between cumulative asbestos exposure and ECC.

conclusionsOur study provides evidence that exposure to asbestos might be a risk factor for ICC. Our findings also suggest that the association between ECC and asbestos is null or weaker than that observed for ICC. Further studies based on large industrial cohorts of asbestos workers and possibly accounting for personal characteristics and clinical history are needed.

Indexed as

AgedAged, 80 and overAsbestosBile Duct NeoplasmsCase-Control StudiesCholangiocarcinomaFemaleFinlandHumansIcelandLogistic ModelsMaleMiddle AgedNorwayOccupational ExposureOdds RatioAsbestos

Identifiers

PMID29133597
PMCPMC5869450

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.