Cellular and cordless telephone use and the association with brain tumors in different age groups.
The authors' case-control study on the possible association between brain tumors and mobile and cordless telephone use included 1,617 patients and 1,617 controls. A questionnaire was answered by 1,429 (88%) cases and 1,470 (91%) controls. Use of analog cellular telephones yielded an odds ratio (OR) for brain tumors of 1.31, 95% confidence interval (CI) = 1.04-1.64, increasing for ipsilateral use to OR = 1.65, 95% CI = 1.19-2.30. The authors found the highest risk for the 20-29-yr age group, with OR = 5.91, 95% CI = 0.63-55 for ipsilateral use of analog phones. The highest risks were associated with >5-year latency period in the 20-29-yr age group for analog phones (OR = 8.17, 95% CI = 0.94-71), and cordless phones (OR = 4.30, 95% CI = 1.22-15).
Hardell
Lennart
L
Department of Oncology, University Hospital, Orebro, Sweden. lennart.hardell@orebroll.se
Mild
Kjell H
KH
Carlberg
Michael
M
Hallquist
Arne
A
D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D001932:Brain Neoplasms / Q000453:epidemiology / Q000209:etiology*; D016022:Case-Control Studies; D040421:Cell Phone; D005260:Female; D006801:Humans; D008297:Male; D008872:Microwaves / Q000009:adverse effects*; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology / Q000209:etiology*; D018570:Risk Assessment; D011795:Surveys and Questionnaires; D013548:Sweden / Q000453:epidemiology; D013689:Telephone