Pooled analysis of two case-control studies on the use of cellular and cordless telephones and the risk of benign brain tumours diagnosed during 1997-2003.
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Date
2006-01-04
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Abstract
The use of cellular and cordless telephones and the risk of brain tumours is of concern since the brain is a high exposure area We present the results of a pooled analysis of two case control studies on benign brain tumours diagnosed during 1997 2003 including answers from 1 254 88 cases and 2 162 89 controls aged 20 80 years For acoustic neuroma the use of analogue cellular phones gave an odds ratio OR of 2 9 and a 95 confidence interval CI of 2 0 4 3 for digital cellular phones OR 1 5 95 CI 1 1 2 1 and for cordless telephones OR 1 5 95 CI 1 04 2 0 The highest OR was found for analogue phones with a latency period of 15 years OR 3 8 95 CI 1 4 10 Regarding meningioma the results were as follows for analogue phones OR 1 3 95 CI 0 99 1 7 for digital phones OR 1 1 95 CI 0 9 1 3 and for cordless phones OR 1 1 95 CI 0 9 1 4 In the multivariate analysis a significantly increased risk of acoustic neuroma was found with the use of analogue phones