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EMF Database sample abstract
Last modified on:
Monday, July 31, 2000
Copyright © 1994-2008, Information Ventures, Inc.
EPIDEMIOLOGICAL STUDY OF CELLULAR TELEPHONE USE AND MALIGNANT BRAIN TUMORS (MEETING ABSTRACT).
(Eng.)
Muscat, J.
[American Health Foundation, New York, NY]
Second State of the Science Colloquium on the Public Health Impact of Wireless Technology, 19-20 June, Long Beach, CA; Wireless Technology Res., LLC, Abstract No. 18;
1999
Background: Intracranial exposure to radiofrequency energy emitted from handheld cellular telephones is hypothesized to affect the development of brain cancer. Methods: A hospital-based case-control study was conducted to assess the risk of brain cancer associated with cell phone use. Information on self-reported cell phone history and billing information was collected from 466 men and women diagnosed with brain cancer and 422 control subjects. Results: Eighteen percent of control subjects reported using cell phones. The prevalence did not vary by diagnostic category. The reported average monthly cell telephone bill in all users was used as a quasi-validation standard for information provided on cell phone frequency. The correlation between billing data and monthly hours per use was 0.58 (p<0.01). The overall risk of brain cancer associated with cellular telephone use OR = 0.80 (p=N.S.). The risk did not increase with the frequency and duration of cell telephone use. In cases that used cellular phones, cancer occurred relatively more often in the frontal cortex, the area of the brain that has a presumed lower energy exposure. There was a low/moderate concordance between cellular phone handedness and the laterality of cortical tumors (K = 0.26, 95% CI -0.006-0.526). An increased risk of neuroepithelliomatous tumors (35 cases) was found in cell phone users but the risk did not vary by amount of use. Discussion: This study did not find evidence that cell phone use increases the risk of brain cancer. This finding is unlikely due to bias since case and control subjects had similar socioeconomic profiles. The anatomic distribution of tumors in case subjects also does not suggest a role for cellular phone use although there remains some ambiguity in this comparison because of the low/moderate concordance between cell phone handedness and tumor laterality. In subgroup analysis, there was an increased risk of tumors with histologic features of ganglion cells but a decrease risk of all other histologic types. (0 Refs). [Copyright 2000, Information Ventures, Inc.]
The Information Ventures, Inc., EMF Database is a unique and comprehensive computerized database of analytical abstracts of research literature on biological effects of nonionizing electromagnetic radiation. The database supports researchers, engineers, policy makers, and other interested parties by analyzing and compiling the world's scientific and technical literature on EMF bioeffects in a comprehensive convenient resource. The EMF Database is distributed on CD-ROM.
Each entry consists of a complete bibliographic citation, detailed abstract, and other relevant data such as author affiliation, and funding source. The EMF Database contains over 27,000 entries covering the international literature published since 1975. To keep the database timely, new information is added in quarterly updates.
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