Re: Lung cancer mortality from radon versus mortality fromother<plus>Radon...

[hflong@postoffice.pacbell.net]

Don,

I "keep saying this" - ie, "Selecting an outlier  invalidates inference to the whole,"

because neither you nor Fields has responded!

Iowa women had only a -0.3 SD  for lung ca mortality vs radon,

where there was >-3.0 SD for the whole USA.



Nor have you supplied data that could justify substituting statistical

"adjustment" (extrapolation from outside studies and populations)

for matching smokers (32% of controls vs 86% of Iowa cases).



Each of these problems suggests that the Iowa case control study

should not claim better "quality" than Cohen's epidemiologic study.

Do you concede this?



Not, going, going, going - but waiting, waiting, waiting!



Howard Long



Rad health wrote:



> Howard,

>

> Why do you keep saying this.  What point do you hope to make.  Do you

> believe if you say it enough someone will believe it if by chance they

> understand it.  This is silliness.  Perform your double blind studies, who

> is stopping you?  Also, to save bandwidth, please edit your postings.

>

> Don

>

> >Mea culpa! I, too, extrapolated (estimated beyond data at hand) with "Iowa

> >women - 1% outlier of USA lung cancer mortality, 1/radon." What IS in

> >Cohen's data is that Iowa women had only  0.3 standard deviations of

> >inverse association - lung cancer mortality vs radon, whereas p< 0.001

> >chance

> >(many SDs) for whole USA (minus mobile CA, FL, AZ). So Iowa is different,

> >clouding inference to the USA.

> >

> >We need placebo studies - identical controls!

> >

> >Howard Long

>

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