Re: Epi studies

["Carl Miller" <radprot@mad.scientist.com>]

Tony,



I read the section he refers to and it falls short of answering your question.  It is clear Dr. Cohen assumes the risk to an individual in a county is equivalent to a few short term radon test in a county.  That is why he says he is testing the LNT rather than estimating risk to an individual. He has stated in his papers that his ecologic studies can not assess risk to an individual - so what use are they?  Plot the average radon concentrations for each of his counties and his mortality rates for each county.  The spread of the points is huge.  One could place a positive line, negative line, etc. easily within the data point spread.   



   

----- Original Message -----

From: BERNARD L COHEN <blc+@pitt.edu>

Date: Tue, 06 May 2003 10:24:44 -0400 (EDT)

To: Tony Harrison <Tony.Harrison@state.co.us>

Subject: Re: Epi studies



> 

> On Mon, 5 May 2003, Tony Harrison wrote:

> 

> > With due respect to Dr. Cohen, I don't understand how one can test the

> > LNT without making some estimate of risk to individuals

> 

> 	--This is explained in Section 1.1 of Item #7 on my web site. If

> there is something in that short section that you do not agree with,

> please let me know.

> 



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