Re: NCRP bias?

[BERNARD L COHEN <blc+@PITT.EDU>]

On Thu, 8 May 2003, Otto G. Raabe wrote:

>

> Dear Bernie:

>

> I propose that living in a formerly Confederate State has a confounding

> effect on the relationship of radon exposure and cigarette smoking and lung

> cancer. Remove all the formerly Confederate States of the "deep South" from

> your analysis and see if your result is markedly changed.



	--To be sure there is no misunderstanding, can you specify what

states I should delete?



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