Evidence map›Paper›PMID 31611302›Full record

ArticleOccupational and environmental medicine2019

Parental occupational exposure to diesel engine exhaust in relation to childhood leukaemia and central nervous system cancers: a register-based nested case-control study in Denmark 1968-2016.

Julie Volk, Julia E Heck, Kjeld Schmiegelow, Johnni Hansen

Open access · greenAbstract read
In one paragraph

Article in Occupational and environmental medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 3 pooled it
1.1field-weighted citation impact, top 25% 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

10 citing papers in PubMed, 3 syntheses or guidelines pooled it, 20 citations in OpenAlex.

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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

4 authors at 3 institutions in 2 countries.

Julie VolkDiet, Genes and Environment, Danish Cancer Society Research Center, Copenhagen, Denmark julvol@cancer.dk.ORCID 0000-0003-3829-166X
Julia E HeckDepartment of Epidemiology, University of California, Los Angeles, California, USA.ORCID 0000-0001-8713-8413
Kjeld SchmiegelowDepartment of Paediatrics and Adolescent Medicine, University Hospital Rigshospitalet, Copenhagen, Denmark.
Johnni HansenInstitute of Cancer Epidemiology, Danish Cancer Society Research Center, Copenhagen, Denmark.
Danish Cancer Society · DKRigshospitalet · DKUniversity of California, Los Angeles · US

Funding

Maternal comorbidities, prescription drug use in pregnancy and childhood cancerR21CA175959 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HECK, JULIA · 2014 to 2015
$323k
Parental Occupation and Childhood CancersR03ES021643 · NIEHS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HECK, JULIA · 2012 to 2013
$152k
NIEHS NIH HHS R03 ES021643
6 · The paper itself

Abstract

objectivesUsing nationwide register data, we investigated the association between maternal and paternal perinatal employment in industries with exposure to diesel engine exhaust and risk of leukaemia and central nervous system (CNS) cancers, including certain subtypes.

methodsChildren aged≤19 years and diagnosed with childhood cancer from 1968 to 2016 were identified in the Danish Cancer Registry and 25 randomly selected cancer-free controls per case were matched by age and sex. Parents were identified in the Danish Civil Registration System and employment histories were retrieved from a nationwide mandatory pension fund. The probability of exposure to diesel engine exhaust was assessed using a validated job exposure matrix. Conditional logistic regression was used for estimation of ORs, including their 95% CIs.

resultsMaternal employment in industries with diesel engine exhaust exposure was associated with an increased risk of CNS cancers (OR 1.31, 95% CI 0.99 to 1.74) and of astrocytoma (OR 1.49, 95% CI 1.04 to 2.14) in offspring. The highest OR for these cancers were seen for mothers with highest probability of exposure to diesel engine exhaust. For fathers, ORs for cancers under study were close to one. No increased risks of leukaemias were found for either mothers or fathers employed in diesel industries.

conclusionsRisks were increased for CNS and astrocytoma for maternal employment in industries with diesel engine exhaust.

Indexed as

Vehicle EmissionsAdolescentAstrocytomaCase-Control StudiesCentral Nervous System NeoplasmsChildChild, PreschoolDenmarkFemaleHumansInfantLeukemiaMaleMaternal ExposureOccupational ExposurePaternal ExposureVehicle Emissionschildhood cancerdiesel engine exhaustjob-exposure matrixparental occupational exposureregister-based study

Identifiers

PMID31611302
PMCPMC7012305
OpenAlexW2980991915

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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.