Case-Control Study on Radiology Work, Medical X-ray Investigations, and Use of Cellular Telephones as Risk Factors for Brain Tumors

, Department of Oncology, Orebro Medical Center, SE-701 85 Orebro, Sweden email: , Department of Oncology, Orebro Medical Center, SE-701 85 Orebro, Sweden , Department of Neurology, Orebro Medical Center, SE-701 85 Orebro, Sweden , Department of Oncology, Karolinska Institute and Stockholms Sjukhem, Mariebergsgatan 22, SE-112 35 Stockholm, Sweden

In This Article

Statistical Methods

Conditional logistic regression analysis for matched studies was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs) (SAS Institute Inc, Cary, North Carolina). Results for occupations (ever employed for more than 1 year) with at least 10 exposed subjects (cases and controls) and for occupations of a priori interest, such as linemen, are presented. In a multivariate analysis, use of cellular telephones and some exposures with significantly increased risks were analyzed.

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3090D553-9492-4563-8681-AD288FA52ACE
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