Re: Cohen's Ecologic Studies

[epirad@mchsi.com]

Howard,



You may want to check with Dr. Cohen, but you may be 

comparing apples and oranges.  Our measurments reflect 

exposure and are year long measurements.  Dr. Cohen's 

are derived from short term screening measurements.  



I only have a copy of Dr. Lubin's preprint.  You may 

want to request a copy from him directly.



Bill  

> Dear Bill Field,

> I do conceive of a way both you and Cohen could be right about your own studies.

> 

> What if c 4 to 6 pCi/L were a "threshold"? If below that, down to c 1.0 pCi/L 

> there

> was a lower risk of cancer than either more OR LESS  radon concentration, both 

> could

> be correct.

> 

> Do you have data to compare lung cancer rates where radon was 2-4 pCi/L with 

> locations

> having <1.0 pCi/L? You wrote that most Iowa controls as well as cases had 

> exposure to

> > 5.0 pCi/L radon, far above the USA  average for Cohen-studied counties.

> 

> Howard Long

> 

> 

> >

> > ,

> >

> >

> >

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