Re: Radon and Smoking

["Field, R. William" <bill-field@UIOWA.EDU>]

Kai wrote:



>I think what this comes down to, is that we really don't know how a lung 

>cancer diagnosis affects the ventilation in a house.

>

>Kai





In the Iowa study, we collected information on window opening and other 

individual behaviors and structural factors concerning ventilation during 

the residency of the subject in the home so we do have that 

information.  This is just one of the advantages you have with a 

case-control study.



Regards, Bill Field



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