Electromagnetic Field Toxicology Reporter

Evaluation and Assessment of Extremely Low Frequency EMF Bioeffects
Volume 2, Number 4, December 2000

Metrics and Dosimetry

by Robert B. Goldberg, Ph.D., Editor

Summary

All the exposure metrics used in epidemiological studies suffer from significant limitations, taking no account of variability in exposure intensity, transients, intensity spikes, harmonics of the fundamental ELF frequency, historical exposures, and the widely different exposures received by individuals within a particular job category. In this issue we discuss papers that examined the question of what exposures are actually received by workers in the so-called "electrical jobs," which are supposedly characterized by high exposure to EMF levels, and those received by workers in other occupational environments. There were some surprising findings. We discuss a recent study that evaluated strategies for classifying ELF magnetic field exposures on the basis of summary exposure measures and exposure pattern characteristics. The fields generated by domestic appliances have been less well explored than those from power lines. In this issue we review one paper presenting comparative data on these fields from the US and the UK, and several epidemiological studies of residential EMFs and cancer, including a comparison of data from a detailed appliance-use questionnaire and direct personal monitoring. [three pages, 12 references].

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