Evidence map›Paper›PMID 29408862›Full record

ArticlePloS one2018

Shared and unshared exposure measurement error in occupational cohort studies and their effects on statistical inference in proportional hazards models.

Sabine Hoffmann, Dominique Laurier, Estelle Rage, Chantal Guihenneuc, Sophie Ancelet

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In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–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

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3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

  1. Article
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  8. PUMA - pooled uranium miners analysis: cohort profile.Occupational and environmental medicine · 2020
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

5 authors.

Sabine HoffmannInstitut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France.ORCID 0000-0001-6197-8801
Dominique LaurierInstitut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France.
Estelle RageInstitut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France.
Chantal GuihenneucFaculté de Pharmacie, Université Paris Descartes, Paris, France.
Sophie AnceletInstitut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Exposure measurement error represents one of the most important sources of uncertainty in epidemiology. When exposure uncertainty is not or only poorly accounted for, it can lead to biased risk estimates and a distortion of the shape of the exposure-response relationship. In occupational cohort studies, the time-dependent nature of exposure and changes in the method of exposure assessment may create complex error structures. When a method of group-level exposure assessment is used, individual worker practices and the imprecision of the instrument used to measure the average exposure for a group of workers may give rise to errors that are shared between workers, within workers or both. In contrast to unshared measurement error, the effects of shared errors remain largely unknown. Moreover, exposure uncertainty and magnitude of exposure are typically highest for the earliest years of exposure. We conduct a simulation study based on exposure data of the French cohort of uranium miners to compare the effects of shared and unshared exposure uncertainty on risk estimation and on the shape of the exposure-response curve in proportional hazards models. Our results indicate that uncertainty components shared within workers cause more bias in risk estimation and a more severe attenuation of the exposure-response relationship than unshared exposure uncertainty or exposure uncertainty shared between individuals. These findings underline the importance of careful characterisation and modeling of exposure uncertainty in observational studies.

Indexed as

Environmental ExposureProportional Hazards ModelsCohort StudiesHumans

Identifiers

PMID29408862
PMCPMC5800563

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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.