Pooled analysis of case-control studies on XXXX and the use of mobile and cordless phones including living and deceased subjects.

@entity1 @entity11 @entity816 @entity1313
We studied the association between use of mobile and cordless phones and @entity1313 . Pooled analysis was performed of two case-control studies on @entity1 with @entity1313 diagnosed during 1997-2003 and matched controls alive at the time of study inclusion and one case-control study on deceased @entity1 and controls diagnosed during the same time period. Cases and controls or relatives to deceased subjects were interviewed using a structured questionnaire. Replies were obtained for 1,251 (85%) cases and 2,438 (84%) controls. The risk increased with latency period and cumulative use in hours for both mobile and cordless phones. Highest risk was found for the most common type of @entity11 , @entity816 , yielding in the >10 year latency group for mobile phone use odds ratio (OR) = 2.7, 95% confidence interval (CI) = 1.9-3.7 and cordless phone use OR = 1.8, 95% CI = 1.2-2.9. In a separate analysis, these phone types were independent risk factors for @entity11 . The risk for @entity816 was highest in the group with first use of a wireless phone before the age of 20; mobile phone use OR = 4.9, 95% CI = 2.2-11, cordless phone use OR = 3.9, 95% CI = 1.7-8.7. In conclusion, an increased risk was found for @entity11 and use of mobile or cordless phone. The risk increased with latency time and cumulative use in hours and was highest in subjects with first use before the age of 20.
