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Re: Risks of low level radiation - New Scientist Article
From: "Jacobus, John (OD/ORS)" <jacobusj@ors.od.nih.gov>
> Otto,
> I believe there were postings about soot or fine particles as being a cause
> for lung diseases in cities. Could this be the confounding factor for which
> you are looking?
>
> -- John
John,
A good thought, but it's not. Cohen stratified his data into 5 levels, in
one case, from the "most-rural" to the "most-urban." Each separate
(completely independent) set shows the same relationship between radon and
lung cancer.
Jim
> -----Original Message-----
> From: Otto G. Raabe [mailto:ograabe@UCDAVIS.EDU]
> Sent: Thursday, December 06, 2001 5:43 PM
> To: Jim Nelson; jim.dukelow@PNL.GOV; hflong@pacbell.net
> Cc: radsafe@list.vanderbilt.edu
> Subject: RE: Risks of low level radiation - New Scientist Article
> . . .
> Meanwhile, Colorado enjoys one of the lowest lung cancer rates in the
> nation. In 1995
> it was 49 the out of 51. Washington,DC, where radon concentrations are much
> lower, had the highest lung cancer rate in 1995 (Am. Cancer Society, 1996).
>
> Of course, it is always possible to say that some yet-to-be discovered
> cross-level confounder could be causing the "apparent" disagreement with
> LNT, but it does seem unlikely.
> . . .
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