Evidence map›Paper›PMID 32026169›Full record

ArticleEuropean journal of epidemiology2020

Outdoor light at night at residences and breast cancer risk in Canada.

Jennifer Ritonja, Michael A McIsaac, Eric Sanders, Christopher C M Kyba, Anne Grundy, Emilie Cordina-Duverger, John J Spinelli, Kristan J Aronson

Abstract read
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In one paragraph

Article in European journal of epidemiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

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

  1. Pooled it
  2. Pooled it
  3. Article
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  5. Review
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  8. Article
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  12. Review
  13. Light Pollution and Cancer.International journal of molecular sciences · 2020
    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

8 authors.

Jennifer RitonjaDepartment of Public Health Sciences, Queen's University, Kingston, ON, Canada.ORCID http://orcid.org/0000-0003-2813-867X
Michael A McIsaacDepartment of Public Health Sciences, Queen's University, Kingston, ON, Canada.
Eric SandersDepartment of Statistics, University of British Columbia, Vancouver, BC, Canada.
Christopher C M KybaGFZ German Research Centre for Geosciences, Potsdam, Germany.
Anne GrundyCentre de recherche du CHUM, Montréal, QC, Canada.
Emilie Cordina-DuvergerInserm, Team Cancer-Environment, Université Paris-Saclay, Université Paris-Sud, CESP (Center for Research in Epidemiology and Population Health), Villejuif, France.
John J SpinelliSchool of Population and Public Health, University of British Columbia, Vancouver, BC, Canada.
Kristan J AronsonDepartment of Public Health Sciences, Queen's University, Kingston, ON, Canada. aronson@queensu.ca.

Funding

Breast Cancer Action Kingston 70125CIHR 69036European Union's Horizon 2020 research and innovation programme ERA-PLANET 689443Helmholtz Association Initiative and Networking Fund ERC-RA-0031
6 · The paper itself

Abstract

Experimental and epidemiologic studies suggest that light at night (LAN) exposure disrupts circadian rhythm, and this disruption may increase breast cancer risk. We investigated the potential association between residential outdoor LAN and breast cancer risk. A population-based case-control study was conducted in Vancouver, British Columbia and Kingston, Ontario, Canada with incident breast cancer cases, and controls frequency matched by age in the same region. This analysis was restricted to 844 cases and 905 controls who provided lifetime residential histories. Using time-weighted average duration at each home 5-20 years prior to study entry, two measures of cumulative average outdoor LAN were calculated using two satellite data sources. Logistic regression was used to estimate the relationship between outdoor LAN and breast cancer risk, considering interactions for menopausal status and night shift work. We found no association between residential outdoor LAN and breast cancer for either measure of LAN [OR comparing highest vs. lowest tertile (DNB) = 0.95, 95% CI 0.70-1.27]. We also found no association when considering interactions for menopausal status and past/current night work status. These findings were robust to changes to years of residential data considered, residential mobility, and longer exposure windows. Our findings are consistent with studies reporting that outdoor LAN has a small effect or no effect on breast cancer risk.

Indexed as

LightAdultAgedAged, 80 and overBiomarkers, TumorBreast NeoplasmsBritish ColumbiaCircadian RhythmFemaleHumansIncidenceMiddle AgedOntarioPopulation SurveillanceReceptors, EstrogenReceptors, ProgesteroneBiomarkers, TumorReceptors, EstrogenReceptors, ProgesteroneBreast cancerCase–control studyCircadian disruptionLight at nightNight workWomen’s health

Identifiers

PMID32026169

What OpenQuestion holds

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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.