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RE: Cohen's Refutation of LNT
Rad health wrote:
<snip>
> Howard, speaking of real epidemiologists. Try asking Dr. Colditz, an
> epidemiologist at Harvard School of Public Health what he thinks of Dr.
> Cohen's interpretation of his ecologic findings. It would make an
> interesting letter in itself.
Funny you should ask (not that you would actually learn anything):
Cohen BL, Colditz GA.
Tests of the linear-no threshold theory for lung cancer induced by exposure to radon.
Environ Res 1994 Jan;64(1):65-89
ABSTRACT:
The linear theory used to extrapolate the cancer risk of radon exposure from high levels where direct data are available to low levels encountered in homes is tested by comparing lung cancer rates, m, and average radon levels, r, in numerous U.S. states and counties. It is shown that most problems normally associated with ecological studies do not apply here. The data show a very strong tendency for lung cancer rates, corrected for smoking prevalence (S), to decrease with increasing r, in sharp contrast to the opposite behavior predicted by the theory. It is shown that even a perfect negative r-S correlation cannot explain this discrepancy. Actual r-S correlations are only a few percent. Several other possible explanations for the discrepancy are explored, but none can reduce it by more than about 25%.
The paper is strong on the science, with results only confirmed, never refuted.
> Wonder why Dr. Colditz does not respond to the articles writen by other
> epidemiologists such as Drs. Doll, Field, Archer, Goldsmith, Darby, and
> Lubin criticizing Dr. Cohen's interpretation of his findings?
Unforunately Colditz decided long ago that there was no science (and only a distraction from the many very substantial studies that he directs) in arguing with the cabal of politically-motivated "epis" and their disinformation (that also have damaged careers of people who tell the truth -and fund those who follow the bureaucratic mandate).
JIm Muckerheide
> Don Smith
>
> >From: hflong@postoffice.pacbell.net
> >Reply-To: hflong@pacbell.net
> >To: Rad health <healthrad@hotmail.com>
> >CC: hflong@pacbell.net, radsafe@list.vanderbilt.edu
> >Subject: Re:
> >Date: Fri, 08 Feb 2002 14:45:52 -0800
> >
> >Dear Harvey Griswold and other LNT Proponents
> >"In a recent paper, we have demonstrated that the confounding factors in
> >the
> >radon data of Cohen (1995) do not invalidate these data for risk
> >assessments,
> >contrary to the claims of some epidemiologists (Seiler and Alvarez 2000)."
> >
> >Truth, not authority, decides science.
> >
> >Howard Long
> >
> >Rad health wrote:
> >
> > > Dr. Long,
> > >
> > > It is pretty obvious you are jealous of Dr. Field's work. He has
> >received
> > > numerous accolades from the EPA, NCI, NIEHS, past Health Physics Society
> > > president to name just a few. I have been to meetings where he has had
> > > numerous standing ovations for the rigor of his design. When I first
> >read
> > > your emails, I thought you actually knew something about epidemiology.
> >I
> > > see that was an error.
> > >
> > > For someone who has never published a peer reviewed epidemiology article
> >you
> > > are pretty bold in word.
> > >
> > > Cohen's fallacy lives!
> > >
> > > Harvey Griswald
> > > Harvard School of Public Health
> > >
> > > _________________________________________________________________
> > > MSN Photos is the easiest way to share and print your photos:
> > > http://photos.msn.com/support/worldwide.aspx
> >
>
> _________________________________________________________________
> Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.
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