Evidence map›Paper›PMID 24679435›Full record

ArticleCancer epidemiology2014

Potential role of selection bias in the association between childhood leukemia and residential magnetic fields exposure: a population-based assessment.

Danna A Slusky, Monique Does, Catherine Metayer, Gabor Mezei, Steve Selvin, Patricia A Buffler

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Cancer epidemiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

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

  1. Allergies and Childhood Acute Lymphoblastic Leukemia: A Case-Control Study and Meta-analysis.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2018
    Pooled it
  2. Review
  3. Article
  4. Neighborhood Deprivation, Indoor Chemical Concentrations, and Spatial Risk for Childhood Leukemia.International journal of environmental research and public health · 2023
    Article
  5. Review
  6. Article
  7. Childhood Leukemia and Primary Prevention.Current problems in pediatric and adolescent health care · 2016
    Article
  8. Childhood leukemia and 50 Hz magnetic fields: findings from the Italian SETIL case-control study.International journal of environmental research and public health · 2015
    Article
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.

Danna A SluskySchool of Public Health, University of California, Berkeley, CA, United States. Electronic address: dannaaharon@gmail.com.
Monique DoesSchool of Public Health, University of California, Berkeley, CA, United States.
Catherine MetayerSchool of Public Health, University of California, Berkeley, CA, United States.
Gabor MezeiElectric Power Research Institute, Palo Alto, CA, United States.
Steve SelvinSchool of Public Health, University of California, Berkeley, CA, United States.
Patricia A BufflerSchool of Public Health, University of California, Berkeley, CA, United States.

Funding

Training CoreP42ES004705 · NIEHS · UNIVERSITY OF CALIFORNIA BERKELEY · PI MORELLO-FROSCH, RACHEL ADELE · 1987 to 2025
$74.6M
Environmental and Molecular Epidemiology of Childhood LeukemiaR01ES009137 · NIEHS · UNIVERSITY OF CALIFORNIA BERKELEY · PI METAYER, CATHERINE · 1999 to 2013
$21.1M
NIEHS NIH HHS P42 ES004705NIEHS NIH HHS PS42 ES04705NIEHS NIH HHS R01 ES009137NIEHS NIH HHS R01 ES09137
6 · The paper itself

Abstract

purposeData from the Northern California Childhood Leukemia Study (NCCLS) were used to assess whether selection bias may explain the association between residential magnetic fields (assessed by wire codes) and childhood leukemia as previously observed in case-control studies.

methodsWiring codes were calculated for participating cases, n=310; and non-participating cases, n=66; as well as for three control groups: first-choice participating, n=174; first-choice non-participating, n=252; and replacement (non-first choice participating controls), n=220.

resultsParticipating controls tended to be of higher socioeconomic status than non-participating controls, and lower socioeconomic status was related to higher wire-codes. The odds ratio (OR) for developing childhood leukemia associated with high wire-codes was 1.18 (95% CI: 0.85, 1.64) when all cases were compared to all first-choice controls (participating and non-participating). The OR for developing childhood leukemia in the high current category was 1.43 (95% CI: 0.91, 2.26) when participating cases were compared to first-choice participating controls, but no associations were observed when participating cases were compared to non-participating controls (OR=1.06, 95% CI: 0.71, 1.57) or to replacement controls (OR=1.06, 95% CI: 0.71, 1.60).

conclusionsThe observed risk estimates vary by type of control group, and no statistically significant association between wire codes and childhood leukemia is observed in the California population participating in the NCCLS.

Indexed as

Magnetic FieldsAdolescentAdultCaliforniaCase-Control StudiesChildFemaleHumansLeukemiaMaleRisk FactorsSelection BiasSocioeconomic FactorsLeukemiaMagnetic fieldsSelection bias

Identifiers

PMID24679435
PMCPMC4140526

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Registered trials

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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.