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Case-control study of childhood cancer and exposure to 60-Hz magnetic fields

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Authors not listed · 1988

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In a Denver case-control study, wire codes indicating higher magnetic fields were associated with an odds ratio of 1.5 for total childhood cancers.

Plain English Summary

Summary written for general audiences

Researchers studied 356 children diagnosed with cancer between 1976 and 1983 in the Denver area and compared them with controls selected by random digit dialing. Measured magnetic fields under low power use at a 2.0 milligauss cutoff showed an odds ratio of 1.4 for total cancers, with higher odds ratios for leukemias, lymphomas, and soft tissue sarcomas. Wire configuration codes contrasting very high and high versus very low, low, and buried codes yielded an odds ratio of 1.5 for total cancers. Adjusted estimates for measured fields and wire codes did not differ from crude results, indicating an absence of confounding.

Why This Matters

Under high power use conditions, neither magnetic fields nor electric fields were related to total cancers. The wire code association was consistent across cancer subgroups except for brain cancer and lymphomas. Contrasting very high to buried wire code homes produced larger but less precise odds ratios of 2.3 for total cases, 2.9 for leukemias, and 3.3 for lymphomas. The authors noted limitations including nonresponse, differential mobility, and exposure misclassification from imperfect surrogates. Despite these concerns, the results encouraged further examination of the carcinogenic potential of this nonionizing radiation.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 60 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (1988). Case-control study of childhood cancer and exposure to 60-Hz magnetic fields.
Show BibTeX
@article{case_control_study_of_childhood_cancer_and_exposure_to_60_hz_magnetic_fields_ce1623,
  author = {Unknown},
  title = {Case-control study of childhood cancer and exposure to 60-Hz magnetic fields},
  year = {1988},
  doi = {10.1093/OXFORDJOURNALS.AJE.A114943},
  
}

Quick Questions About This Study

The study was a case-control design involving 356 children aged 0-14 diagnosed with cancer in the Denver area between 1976 and 1983, with controls selected by random digit dialing.
Measured magnetic fields under low power use at a 2.0 milligauss cutoff showed an odds ratio of 1.4 for total cancers, with higher odds ratios for leukemias, lymphomas, and soft tissue sarcomas, while high power use measurements showed no association.
Wire codes indicating higher magnetic fields were more common among case homes, with an odds ratio of 1.5 for total cancers when contrasting very high and high codes versus very low, low, and buried codes.
Adjusted estimates for measured fields and wire codes did not differ from crude results, indicating an absence of confounding.
The authors noted nonresponse especially for field measurements, differential mobility of cases and controls, and exposure misclassification from imperfect surrogates for long-term magnetic field exposure history.