Evidence map›Paper›PMID 25192403›Full record

ArticleEpidemiology (Cambridge, Mass.)2014

Occupational radon exposure and lung cancer mortality: estimating intervention effects using the parametric g-formula.

Jessie K Edwards, Leah J McGrath, Jessie P Buckley, Mary K Schubauer-Berigan, Stephen R Cole, David B Richardson

Abstract read
In one paragraph

Article in Epidemiology (Cambridge, Mass.), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

6 authors.

Jessie K EdwardsFrom the aDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC; and bDivision of Surveillance, Hazard Evaluations, and Field Studies, National Institute for Occupational Safety and Health, Cincinnati, OH.
Leah J McGrath
Jessie P Buckley
Mary K Schubauer-Berigan
Stephen R Cole
David B Richardson

Funding

Cohort analysis methods for occupational cancer studiesR01CA117841 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI RICHARDSON, DAVID B · 2007 to 2012
$1.1M
Intramural CDC HHS CC999999NCI NIH HHS R01 CA117841NCI NIH HHS R01CA117841
6 · The paper itself

Abstract

backgroundTraditional regression analysis techniques used to estimate associations between occupational radon exposure and lung cancer focus on estimating the effect of cumulative radon exposure on lung cancer. In contrast, public health interventions are typically based on regulating radon concentration rather than workers' cumulative exposure. Estimating the effect of cumulative occupational exposure on lung cancer may be difficult in situations vulnerable to the healthy worker survivor bias.

methodsWorkers in the Colorado Plateau Uranium Miners cohort (n = 4,134) entered the study between 1950 and 1964 and were followed for lung cancer mortality through 2005. We use the parametric g-formula to compare the observed lung cancer mortality to the potential lung cancer mortality had each of 3 policies to limit monthly radon exposure been in place throughout follow-up.

resultsThere were 617 lung cancer deaths over 135,275 person-years of follow-up. With no intervention on radon exposure, estimated lung cancer mortality by age 90 was 16%. Lung cancer mortality was reduced for all interventions considered, and larger reductions in lung cancer mortality were seen for interventions with lower monthly radon exposure limits. The most stringent guideline, the Mine Safety and Health Administration standard of 0.33 working-level months, reduced lung cancer mortality from 16% to 10% (risk ratio = 0.67 [95% confidence interval = 0.61 to 0.73]).

conclusionsThis work illustrates the utility of the parametric g-formula for estimating the effects of policies regarding occupational exposures, particularly in situations vulnerable to the healthy worker survivor bias.

Indexed as

MiningAgedAged, 80 and overAir Pollutants, RadioactiveCause of DeathColoradoHumansLung NeoplasmsMaleMiddle AgedNeoplasms, Radiation-InducedOccupational DiseasesOccupational ExposureRadonRisk AssessmentAir Pollutants, RadioactiveRadon

Identifiers

PMID25192403
PMCPMC4524349

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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.