[ RadSafe ] FDA on mobile phones & brain cancer

[Bjorn Cedervall]

It is good to see that this points at the method:
http://www.fda.gov/cdrh/wireless/braincancer040606.html

The method is to send 20 page questionnaires to cases and controls. After 
two reminders a follow up is instead done by telephone giving a 90 % 
response rate. How on earth do you make balanced interviews with hundreds of 
people (more than 500?) to get answers corresponding to 20 pages of 
questions?

If the method is wrong it doesn't matter what the statistics say because the 
methodological problem will then dominate.

This is BTW from our national recordholder in unfounded cancer alarms. The 
following link is for those who read Swedish:
http://www.svd.se/dynamiskt/Inrikes/did_2707808.asp

My personal action and opinion,

Bjorn Cedervall          bcradsafers at hotmail.com