title: Assessing occupational and domestic ELF magnetic field exposure in the uk adult brain tumour study: results of a feasibility study.
abstract: The feasibility of measuring exposure to extremely low frequency magnetic fields (ELF MF) in the UK Adult Brain Tumour Study (UKABTS) was examined. During the study, 81 individuals and 30 companies were approached with 79 individuals and 25 companies agreeing to participate. Exposure data were collected using EMDEX II dosemeters worn by the participants for 3-4 consecutive days. Data were collected over a total of 321 d, including non-occupational periods. The results showed occupational exposure to be the main determinant of overall exposure. Moderate to strong correlations were found between arithmetic mean exposure and all other metrics with the possible exception of maximum exposure. Significant differences in exposure were found between job categories with large variability in certain categories. Highest average exposures were found for security officers (arithmetic mean, AM: 0.78 micro T), secretaries (AM: 0.48 micro T) and dentists (AM: 0.42 micro T). Welding and working near high-voltage power lines were associated with elevated exposure. In summary, acceptably precise measures of ELF MF exposure are feasible at relatively moderate cost. The results were used to develop a protocol for data collection from subjects in the UKABTS.
authors.affiliation: Centre for Occupational and Environmental Health, University of Manchester, Oxford Road, Humanities Building, Manchester M13 9PL, UK. martie.van-tongeren@man.ac.uk
authors.forename: Martie
authors.initials: M
authors.lastname: van Tongeren
authors.forename: Terry
authors.initials: T
authors.lastname: Mee
authors.forename: Pamela
authors.initials: P
authors.lastname: Whatmough
authors.forename: Lisa
authors.initials: L
authors.lastname: Broad
authors.forename: Myron
authors.initials: M
authors.lastname: Maslanyj
authors.forename: Stuart
authors.initials: S
authors.lastname: Allen
authors.forename: Ken
authors.initials: K
authors.lastname: Muir
authors.forename: Patricia
authors.initials: P
authors.lastname: McKinney
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D001822:Body Burden; D001932:Brain Neoplasms / Q000453:epidemiology; D016022:Case-Control Studies; D004574:Electromagnetic Fields; D004781:Environmental Exposure / Q000032:analysis / Q000706:statistics & numerical data; D004784:Environmental Monitoring / Q000379:methods* / Q000706:statistics & numerical data*; D062665:Epidemiological Monitoring; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology; D016273:Occupational Exposure / Q000032:analysis* / Q000706:statistics & numerical data*; D011829:Radiation Dosage; D011835:Radiation Protection / Q000379:methods; D011874:Radiometry / Q000379:methods* / Q000706:statistics & numerical data*; D018570:Risk Assessment / Q000379:methods; D012307:Risk Factors; D006113:United Kingdom / Q000453:epidemiology