title: Mobile phone use and risk of glioma in adults: case-control study.
abstract: OBJECTIVE
  To investigate the risk of glioma in adults in relation to mobile phone use.
  
  
  METHODS
  Population based case-control study with collection of personal interview data.
  
  
  METHODS
  Five areas of the United Kingdom.
  
  
  METHODS
  966 people aged 18 to 69 years diagnosed with a glioma from 1 December 2000 to 29 February 2004 and 1716 controls randomly selected from general practitioner lists.
  
  
  METHODS
  Odds ratios for risk of glioma in relation to mobile phone use.
  
  
  RESULTS
  The overall odds ratio for regular phone use was 0.94 (95% confidence interval 0.78 to 1.13). There was no relation for risk of glioma and time since first use, lifetime years of use, and cumulative number of calls and hours of use. A significant excess risk for reported phone use ipsilateral to the tumour (1.24, 1.02 to 1.52) was paralleled by a significant reduction in risk (0.75, 0.61 to 0.93) for contralateral use.
  
  
  CONCLUSIONS
  Use of a mobile phone, either in the short or medium term, is not associated with an increased risk of glioma. This is consistent with most but not all published studies. The complementary positive and negative risks associated with ipsilateral and contralateral use of the phone in relation to the side of the tumour might be due to recall bias.
authors.affiliation: Centre for Epidemiology and Biostatistics, Leeds Institute of Genetics, Health, and Therapeutics (LIGHT), Leeds LS2 9LN.
authors.forename: Sarah J
authors.initials: SJ
authors.lastname: Hepworth
authors.forename: Minouk J
authors.initials: MJ
authors.lastname: Schoemaker
authors.forename: Kenneth R
authors.initials: KR
authors.lastname: Muir
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Swerdlow
authors.forename: Martie J A
authors.initials: MJ
authors.lastname: van Tongeren
authors.forename: Patricia A
authors.initials: PA
authors.lastname: McKinney
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000453:epidemiology / Q000209:etiology*; D040421:Cell Phone / Q000706:statistics & numerical data*; D004812:Epidemiologic Methods; D005260:Female; D005910:Glioma / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D006113:United Kingdom / Q000453:epidemiology