Re: Cohen data suspect at best

[Kai Kaletsch <info@eic.nu>]

Looking forward to it. Can you give which journal it will be published in

and when?



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

From: "Rad health" <healthrad@hotmail.com>



> A letter like this is already in press.

>

> >From: Kai Kaletsch <info@eic.nu>

> >Don,

> >

> >Perhaps you can give a numerical example of how census inaccuracies can

> >result in an inverse radon - lung cancer relationship WITHOUT assuming

any

> >relationship between the amount of misclassification and average county

> >radon levels?

> >

> >This doesn't have to be realistic or complicated. You can use the wildest

> >examples your imagination can come up with. But you cannot assume any

> >relationship between the amount of misclassification and average county

> >radon levels.

> >

> >Kai

> >

> >----- Original Message -----

> >From: "Rad health" <healthrad@hotmail.com>

> >

> >

> > > Kai, this is what would be called a systematic bias within the entire

> >data

> > > structure. As Morgenstern has previously pointed out, these group

level

> > > biases are unbounded an can result in inverse associations.

> >

>

>

> _________________________________________________________________

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>



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