Re: Re: Source of cancer data

[BERNARD L COHEN <blc+@PITT.EDU>]

On Mon, 31 Dec 2001, John Williams wrote:

>   In the ecologic study, Cohen used sales tax to infer

> smoking rates for the county.



	--That was in just one of the seven treatments I used to determine

the effects of smoking prevalence, and it was not the principal one. All

seven led to the same conclusion.



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