title: Meningioma patients diagnosed 2007-2009 and the association with use of mobile and cordless phones: a case-control study.
abstract: BACKGROUND
  To study the association between use of wireless phones and meningioma.
  
  
  METHODS
  We performed a case-control study on brain tumour cases of both genders aged 18-75 years and diagnosed during 2007-2009. One population-based control matched on gender and age was used to each case. Here we report on meningioma cases including all available controls. Exposures were assessed by a questionnaire. Unconditional logistic regression analysis was performed.
  
  
  RESULTS
  In total 709 meningioma cases and 1,368 control subjects answered the questionnaire. Mobile phone use in total produced odds ratio (OR) = 1.0, 95% confidence interval (CI) = 0.7-1.4 and cordless phone use gave OR = 1.1, 95% CI = 0.8-1.5. The risk increased statistically significant per 100 h of cumulative use and highest OR was found in the fourth quartile (>2,376 hours) of cumulative use for all studied phone types. There was no statistically significant increased risk for ipsilateral mobile or cordless phone use, for meningioma in the temporal lobe or per year of latency. Tumour volume was not related to latency or cumulative use in hours of wireless phones.
  
  
  CONCLUSIONS
  No conclusive evidence of an association between use of mobile and cordless phones and meningioma was found. An indication of increased risk was seen in the group with highest cumulative use but was not supported by statistically significant increasing risk with latency. Results for even longer latency periods of wireless phone use than in this study are desirable.
authors.forename: Michael
authors.initials: M
authors.lastname: Carlberg
authors.forename: Fredrik
authors.initials: F
authors.lastname: Söderqvist
authors.forename: Kjell
authors.initials: K
authors.lastname: Hansson Mild
authors.forename: Lennart
authors.initials: L
authors.lastname: Hardell
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D040421:Cell Phone; D005260:Female; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000453:epidemiology* / Q000473:pathology; D008579:Meningioma / Q000453:epidemiology* / Q000473:pathology; D008875:Middle Aged; D016017:Odds Ratio; D013548:Sweden / Q000453:epidemiology; D047368:Tumor Burden; D055815:Young Adult