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Comparisons between magnetic field exposure indices in an automobile transmission plant.

Authors
Wenzl-TB; Kriebel-D; Eisen-EA; Ellenbecker-MJ
Source
Am Ind Hyg Assoc J 1995 Apr; 56(4):341-348
NIOSHTIC No.
00226136
Abstract
A survey of extremely low frequency magnetic field (MF) exposure was undertaken of 81 workers in a large automatic transmission factory for a case/control study examining the relationship between the occurrence of primary brain cancer and MF exposure. Employees were chosen for MF measurement from job titles representative of jobs held by subjects in the case/control study. Each worker wore a monitoring instrument for half of a shift. Exposure indices corresponding to various potential biological mechanisms were calculated for each worker. Average exposures ranged from 0.16 to 46 milligauss (mG), and the median exposure was 1.3mG. Nonparametric correlation coefficients were computed to assess the degree of association between exposure indices. A moderate relationship between the selected indices of central tendency and right tail size were observed, while stronger correlations were seen between indices sensitive to the right tail size. Overall, the correlation coefficients within worker exposure indices were neither very high nor very low. A lognormal model showed that the observed indices significantly exceeded those predicted by the model for 47% of the workers, indicating that lognormality might not be reliable for estimating distributions of short term exposures among individuals.
Keywords
NIOSH-Publication; NIOSH-Author; NIOSH-Grant; Cancer; Magnetic-fields; Occupational-exposure; Automotive-industry; Radiation-monitoring; Nonionizing-radiation; Industrial-factory-workers
Contact
Work Environment University of Lowell One University Ave Lowell, MA 01854
CODEN
AIHAAP
Publication Date
19950401
Document Type
Journal Article
Funding Amount
50700.00
Funding Type
Grant
Fiscal Year
1995
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-02820
Issue of Publication
4
ISSN
0002-8894
Source Name
American Industrial Hygiene Association Journal
State
MA
Performing Organization
University of Massachusetts Lowell, Lowell, Massachusetts
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