Re: Cohen's Fallacy

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

On Mon, 28 Jan 2002, Rad health wrote:



>

> I read the papers and I agree with Field, that you are confusing individual

> level confounding with group level confounding.  Why not follow Field's

> suggestion and examine the source of the group level confounding?

> You have no basis for guessing what the group level confounding is by

> assuming it is the same as individual level confounding.



	--I do not assume it is the same as individual level confounding.

I would prefer to discuss this in terms of particular example. Let's

consider my treatment of what I call "the Lubin effect" in my paper in

Health Physics 75:18-22;1998. Let me know what you don't agree with in

that paper.



> >

> >	--I would prefer if you read my paper, but very briefly, I make

> >assumptions about them, calculate what correlations are necessary to

> >explain my data, and consider the plausibility of these required

> >correlations judged by my studies of hundreds of other factors whose

> >correlations with radon I have investigated.



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