Occupational exposures and brain cancer mortality: A preliminary study of East Texas residents

Speers, Marjorie A.; Dobbins, James G.; Miller, Van S.

doi:10.1002/ajim.4700130603

Cited by 78 publications

(31 citation statements)

References 25 publications

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“…An association between electrical work and brain tumors has also been reported in previous epidemiologic studies (14)(15)(16)(19)(20)(21) although negati ve results have also emerged (22,23). The Norwegian census cohort study (5) showed no exces s risk for brain tumors among electrical workers, and our findings do not support the hypothesis that exposure to electric or magnetic field s in power companies enhances the risk for brain tumor.…”

Section: Discussioncontrasting

confidence: 56%

Incidence of cancer among workers in Norwegian hydroelectric power companies.

Tynes¹,

Reitan²,

Andersen³

1994

Scand J Work Environ Health

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OBJECTIVES -The goal of this study was to examine whether exposure to electric or magnetic fields is related to cancer. METHODS -The study cohort consisted of 5088 men who had worked for at least one year between 1920 and 1991 for any of eight participating companies which produce and distribute hydroelectric power in Norway. The occupational exposure of these workers included extremely low-frequency electromagnetic field s. Incident cancer cases identified from the Cancer Registry of Norway were analyzed on the basis of the standardized incidence ratio with the Norwegian male population as reference . RESULTS -The incidence of cancer was close to unity for the cohort. The standardized incidence ratio for lymphoma was below unity, whereas those for leukemia and brain tumors were similar to those expected . Calculated cumulative exposure to electric or magnetic fields was not associated with the incidence of leukemia or brain tumors, but an exces s of malignant melanoma was shown for the highest category of magneti c field exposure. An analysis of combined possible exposure to oils containing polychlorinated biphenyls and exposures to magnetic fields or possible exposure to electric sparks gave standardized incidence ratios of 265 and 280, respectively, for the higher exposure category. CONCLUSIONS -These result s do not support the assumption of a possible associ ation between exposure to electromagnetic fields and leukemia and brain tumors . The possible association between exposure to polychlorinated biphenyls or magnetic fields and risk of malignant melanoma should be further evaluated in future studies.KEY TERMSbrain tumor, cohort , electromagnetic fields, leukemia, malignant melanoma , occupational exposure.

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Section: Discussioncontrasting

confidence: 56%

Incidence of cancer among workers in Norwegian hydroelectric power companies.

Tynes¹,

Reitan²,

Andersen³

1994

Scand J Work Environ Health

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“…The second method used a tiered assignment of exposure that has been employed in death-certificate-based case-referent studies of magnetic-field exposure and brain cancer (14,15). This approach classified people into one of four exposure categories according to a combination of occupation and industry codes.…”

Section: Exposure Assessmentmentioning

confidence: 99%

Occupational exposure to magnetic fields in case-referent studies of neurodegenerative diseases

Noonan

Reif²,

Yost³

et al. 2002

Scand J Work Environ Health

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“…A case-control study ofeast Texas residents who had died of glioma found men employed in occupations involving electromagnetic field exposure to have an elevated risk (OR = 3.94, 95% CI:1.52-10.20) (41). When degree of exposure was categorized according to the scheme of Lin et …”

Section: Studies Of Brain Cancer Onlymentioning

confidence: 99%

“…Seven studies (32,(37)(38)(39)(40)(41)(42) looked specifically at risks ofbrain or nervous system cancer. All seven produced evidence of an association with electromagnetic radiation exposure in at least some occupational categories.…”

Section: Consistencymentioning

confidence: 99%

Extremely low frequency electromagnetic fields and cancer: the epidemiologic evidence.

Bates

1991

Environ Health Perspect

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This paper reviews the epidemiologic evidence that low frequency electromagnetic fields generated by altating current may be a cause ofcancer. Studies examining residential exposures ofchildren and adults and studies ofelectrical and electronics workers are reviewed. Using conventional epidemiologic criteria for inferring causal associations, including strength and consistency of the relationship, biological plausibility, and the possibility ofbias as an explanation, it is concluded that the evidence is strongly suggestive that such nrdiation is carcinogenic. The evidence is strongest for brain andcentral nervous system cancers in electrical workers and children. Weaker evidence supports an association with leukemia in electrical workers. Some evidence alsoeists for an association with mdawnoma in electrial workes Failure to fnd consistent evidence of a link between residential exposures and adult cancers may be attributable to exposure misclassification. Studies so far have used imperfect surrogates for any true biologically effective magnetic field exposure. The resulting exposure misclassification has produced relative risk estimates that understate any true risk.

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Occupational exposures and brain cancer mortality: A preliminary study of East Texas residents

Cited by 78 publications

References 25 publications

Incidence of cancer among workers in Norwegian hydroelectric power companies.

Incidence of cancer among workers in Norwegian hydroelectric power companies.

Occupational exposure to magnetic fields in case-referent studies of neurodegenerative diseases

Extremely low frequency electromagnetic fields and cancer: the epidemiologic evidence.

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