Evidence map›Paper›PMID 34997857›Full record

ArticleInternational archives of occupational and environmental health2022

Cancer incidence in a cohort of Swedish merchant seafarers between 1985 and 2011.

Karl Forsell, Ove Björ, Helena Eriksson, Bengt Järvholm, Ralph Nilsson, Eva Andersson

Open access · hybridAbstract read
In one paragraph

Article in International archives of occupational and environmental health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 34% 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

4 citing papers in PubMed, 4 citations in OpenAlex.

  1. Cancer Incidence Among Swedish Seafarers Between 1985 and 2020.American journal of industrial medicine · 2026
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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

6 authors at 2 institutions in 1 country.

Karl ForsellOccupational and Environmental Medicine, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden. karl.forsell@amm.gu.se.ORCID 0000-0002-4625-2401
Ove BjörDepartment of Radiation Science, Oncology, Umeå University, Umeå, Sweden.
Helena ErikssonOccupational and Environmental Medicine, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.
Bengt JärvholmDepartment of Public Health and Clinical Medicine, Section of Sustainable Health, Umea University, Umea, Sweden.
Ralph NilssonOccupational and Environmental Medicine, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.
Eva AnderssonOccupational and Environmental Medicine, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.
University of Gothenburg · SEUmeå University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeLung cancer, mesothelioma and several lifestyle-associated cancer forms have been reported more common in merchant seafarers. However, few studies reflect recent occupational settings and women seafarers are usually too scarce for meaningful analyses. We conducted a study on cancer incidence between 1985 and 2011 in a Swedish cohort consisting of male and female seafarers.

methodsAll seafarers in the Swedish Seafarers' Register with at least one sea service between 1985 and 2011 and a cumulated sea service time of ≥ 30 days (N = 75,745; 64% men, 36% women; 1,245,691 person-years) were linked to the Swedish Cancer Register and followed-up until 31 December 2011. Standardized incidence ratios (SIR) were calculated with the general population as reference.

resultsThere were 4159 cancer cases in total, with 3221 among men and 938 among women. Male seafarers had an increased risk of total cancer (SIR 1.05; 95% CI 1.01-1.09), lung cancer (SIR 1.51; 95% CI 1.35-1.67) and urinary bladder cancer (SIR 1.17; 95% CI 1.02-1.33). Several lifestyle-associated cancer forms were more common in men. Previous work on tankers was associated with leukaemia (SIR 1.41; 95% CI 1.00-1.86). The risk of cancer decreased with a start as a male seafarer after 1985, with a significant trend for total cancer (P < 0.001), lung cancer (P = 0.001) and, for tanker seafarers, leukaemia (P = 0.045). Women seafarers had an increased risk of lung cancer (SIR 1.54; 95% CI 1.23-1.87) but the risk of total cancer was not increased (SIR 0.83; 95% CI 0.78-0.89).

conclusionsIn this cohort of merchant Swedish seafarers 1985-2011, the risk of total cancer was increased in men but not in women compared to the general population. Lung cancer was increased in both genders. The risk of cancer seems to decrease over the last decades, but better exposure assessments to occupational carcinogens and longer observation times are needed.

Indexed as

LeukemiaLung NeoplasmsMesotheliomaNeoplasmsOccupational DiseasesFemaleHumansIncidenceMaleSwedenCancer incidenceCohortFollow-upLifestyleNeoplasm (epidemiology)Occupational disease (epidemiology)Occupational exposureRecord linkageRisk factorSeafarerSweden

Identifiers

PMID34997857
PMCPMC9203388
OpenAlexW4206063619

What OpenQuestion holds

Textmetadata
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.