Following 11 studies were included: Auvinen et al. 2002, Christensen et al. 2005, Hardell et al. 2006, Hepworth et al. 2006, Hours et al. 2007, Inskip et al. 2001, Klaeboe et al. 2007, Lahkola et al. 2007, Lönn et al. 2005, Schüz et al. 2006 and Takebayashi et al. 2008.
Overall, no association between mobile phone use and glioma risk was observed (OR 1.08, CI 0.91–1.25). However, a significant association was found between mobile phone use for more than 5 years and glioma risk (OR 1.35, CI 1.09–1.62). No publication bias was observed.
The authors conclude that long-term mobile phone use may increase the glioma risk.