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Misclassification of ELF occupational exposure resulting from spatial variation of the magnetic field
Author(s) -
Delpizzo Vincent
Publication year - 1993
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.2250140205
Subject(s) - dosimeter , occupational exposure , radiation exposure , exposure assessment , environmental health , medicine , nuclear medicine , dosimetry
The adequacy of a single hip‐ or chest‐worn magnetic field dosimeter to reliably classify subjects with respect to their occupational ELF magnetic field exposure is investigated. Hip‐worn dosimeters consistently underestimate both whole‐body average exposure and head exposure, tentatively regarded here as two possible definitions of the “true” exposure measurement. The approximate resulting bias in the relative risk estimate in hypothetical case‐control studies is evaluated. A chest‐worn dosimeter is found to be generally superior to a hip‐worn one in assessing exposure during the occupational tasks considered here. © 1993 Wiley‐Liss. Inc.