Meta-analysis of long-term mobile phone use and the association with brain tumours.
We evaluated long-term use of mobile phones and the risk for brain tumours in case-control studies published so far on this issue. We identified ten studies on glioma and meta-analysis yielded OR = 0.9, 95% CI = 0.8-1.1. Latency period of > or =10-years gave OR = 1.2, 95% CI = 0.8-1.9 based on six studies, for ipsilateral use (same side as tumour) OR = 2.0, 95% CI = 1.2-3.4 (four studies), but contralateral use did not increase the risk significantly, OR = 1.1, 95% CI = 0.6-2.0. Meta-analysis of nine studies on acoustic neuroma gave OR = 0.9, 95% CI = 0.7-1.1 increasing to OR = 1.3, 95% CI = 0.6-2.8 using > or =10-years latency period (four studies). Ipsilateral use gave OR = 2.4, 95% CI = 1.1-5.3 and contra-lateral OR = 1.2, 95% CI = 0.7-2.2 in the > or =10-years latency period group (three studies). Seven studies gave results for meningioma yielding overall OR = 0.8, 95% CI = 0.7-0.99. Using > or =10-years latency period OR = 1.3, 95% CI = 0.9-1.8 was calculated (four studies) increasing to OR = 1.7, 95% CI = 0.99-3.1 for ipsilateral use and OR = 1.0, 95% CI = 0.3-3.1 for contralateral use (two studies). We conclude that this meta-analysis gave a consistent pattern of an association between mobile phone use and ipsilateral glioma and acoustic neuroma using > or =10-years latency period.
Hardell
Lennart
L
Department of Oncology, University Hospital, SE-701 85 Orebro, Sweden. lennart.hardell@orebroll.se
Carlberg
Michael
M
Söderqvist
Fredrik
F
Hansson Mild
Kjell
K
D001932:Brain Neoplasms / Q000209:etiology*; D016022:Case-Control Studies; D040421:Cell Phone; D005910:Glioma / Q000209:etiology*; D006801:Humans; D008577:Meningeal Neoplasms / Q000209:etiology*; D008579:Meningioma / Q000209:etiology*; D009381:Neoplasms, Radiation-Induced / Q000209:etiology*; D009464:Neuroma, Acoustic / Q000209:etiology*; D016017:Odds Ratio; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors