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Use of mobile phones and risk of brain tumours : update of Danish cohort study

Frei, P. and Poulsen, A. H. and Johansen, C. and Olsen, J. H. and Steding-Jessen M., and Schuz, J.. (2011) Use of mobile phones and risk of brain tumours : update of Danish cohort study. BMJ : British medical journal, Vol. 343 , d6387.

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Official URL: http://edoc.unibas.ch/dok/A6002386

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Abstract

OBJECTIVE: To investigate the risk of tumours in the central nervous system among Danish mobile phone subscribers. DESIGN: Nationwide cohort study. SETTING: Denmark. PARTICIPANTS: All Danes aged </= 30 and born in Denmark after 1925, subdivided into subscribers and non-subscribers of mobile phones before 1995. MAIN OUTCOME MEASURES: Risk of tumours of the central nervous system, identified from the complete Danish Cancer Register. Sex specific incidence rate ratios estimated with log linear Poisson regression models adjusted for age, calendar period, education, and disposable income. RESULTS: 358,403 subscription holders accrued 3.8 million person years. In the follow-up period 1990-2007, there were 10,729 cases of tumours of the central nervous system. The risk of such tumours was close to unity for both men and women. When restricted to individuals with the longest mobile phone use--that is, </= 13 years of subscription--the incidence rate ratio was 1.03 (95% confidence interval 0.83 to 1.27) in men and 0.91 (0.41 to 2.04) in women. Among those with subscriptions of </= 10 years, ratios were 1.04 (0.85 to 1.26) in men and 1.04 (0.56 to 1.95) in women for glioma and 0.90 (0.57 to 1.42) in men and 0.93 (0.46 to 1.87) in women for meningioma. There was no indication of dose-response relation either by years since first subscription for a mobile phone or by anatomical location of the tumour--that is, in regions of the brain closest to where the handset is usually held to the head. CONCLUSIONS: In this update of a large nationwide cohort study of mobile phone use, there were no increased risks of tumours of the central nervous system, providing little evidence for a causal association
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Epidemiology and Public Health (EPH) > Environmental Exposures and Health > Physical Hazards and Health (Röösli)
UniBasel Contributors:Frei, Patrizia
Item Type:Article, refereed
Bibsysno:Link to catalogue
Publisher:British Medical Journal
ISSN:0959-535X
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:08 Nov 2012 16:22
Deposited On:08 Nov 2012 16:08

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