Pooled analysis of two Swedish case-control studies on the use of mobile and cordless telephones and the risk of brain tumours diagnosed during 1997-2003.
Here we present the pooled analysis of 2 case-control studies on the association of brain tumours with mobile phone use. Use of analogue cellular phones increased the risk for acoustic neuroma by 5%, 95% confidence interval (CI) = 2-9% per 100 hrs of use. The risk increased for astrocytoma grade III-IV with latency period with highest estimates using >10-year time period from first use of these phone types. The risk increased per one year of use of analogue phones by 10%, 95% CI = 6-14%, digital phones by 11%, 95% CI = 6-16%, and cordless phones by 8%, 95% CI = 5-12%. For all studied phone types OR for brain tumours, mainly acoustic neuroma and malignant brain tumours, increased with latency period, especially for astrocytoma grade III-IV.
Mild
Kjell Hansson
KH
National Institute for Working Life, Umeå, Sweden. mild@niwl.se
Hardell
Lennart
L
Carlberg
Michael
M
D001932:Brain Neoplasms / Q000209:etiology*; D016022:Case-Control Studies; D040421:Cell Phone / Q000706:statistics & numerical data; D006801:Humans; D018570:Risk Assessment; D013548:Sweden; D013689:Telephone / Q000706:statistics & numerical data*; D013997:Time Factors