measurement: PEMFs measurement using meter with PEMF channel compiling the proportion of the time (in parts per billion, ppb) during which the electric field is greater than 200 V/m in the 5- to 20-MHzfrequency band
calculation: PEMFs were summarized in each job group as the proportion of subjects measured who had weekly meanPEMFs greater than 100 ppb (equivalent to 14.4 ms per 40-hour work week). Weighted years of cumulativeexposure for each subject's working life were calculated as the product of meanexposure (proportion greater than 100 ppb) and duration of employment (years), in units of "(proportion > 100 ppb)-years"
Reference group 1
cumulative exposure to pulsed electromagnetic fields: < median
cumulative exposure to pulsed electromagnetic fields: ≥ median
cumulative exposure to pulsed electromagnetic fields: ≥ 90th percentile
However, several factors limit the strength of the evidence for a causal relation: lack of precision of the measurements; little previous evidence for this association; and no elevated risk for lung cancer in the utility workers overall in comparison with the general population.
Study funded by
Electricité de France (EDF)
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Conflict of Interest and Bias in Health Advisory Committees: A Case Study of the WHO's EMF Task Group