Re: NCRP bias?

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

	In Sec. 3.1, I showed that the requirements on a confounding

factor to affect my conclusions are extremely implausible. In Sec. 3.2 I

show that this applies to confounding factors on the level of individuals

rather than on the level of county populations. In Sec. 3.3 I show that

these treatments apply to any combination of confounding factors.

	If that does not cover what you are asking about, please give me

an example -- feel free to make one up.



Bernard L. Cohen

Physics Dept.

University of Pittsburgh

Pittsburgh, PA 15260

Tel: (412)624-9245

Fax: (412)624-9163

e-mail: blc@pitt.edu

web site:  www.phyast.pitt.edu/~blc



On Wed, 7 May 2003, Carl Miller wrote:



> Dr. Cohen - I looked at all the sources you mentioned but failed to see where you performed a multivariate analyses on potential co-linear factors.

>

>

>  ----- Original Message -----

> From: BERNARD L COHEN <blc+@PITT.EDU>

> Date: Tue, 06 May 2003 11:47:50 -0400 (EDT)

> To: Carl Miller <radprot@mad.scientist.com>

> Subject: Re: NCRP bias?

>

> >

> > On Mon, 5 May 2003, Carl Miller wrote:

> > >

> > > Dr. Cohen may not think it is plausible to explain his findings just by his

> >  use of guestimated county smoking rates(which are inversely related to the

> >  radon), but what about the co-linearity between smoking, education and

> >  socioeconomic factors? Dr. Field has pointed this out before.

> >

> > 	--These problems are covered in several of my papers. But be more

> > specific if you want a clearer reply. You might try reading my

> > published responses to Dr. Field. Better yet, look at Item #7 on my web

> > site.

> >

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