Re: Radon - recent articles supporting risk at residential exposures

[RuthWeiner@AOL.COM]

In a message dated 1/6/02 4:28:18 PM Mountain Standard Time, JohnWi@law.com writes:



> You have to factor in good control of smoking duation, rate etc.
>
> Is the smoking rate in the uper midwest lower than the national 
>
> average?
>
>
> I have a question for you.  As Dr. Field pointed out before, the 
>
> counties around Three Mile Island have the highest regional radon 
>
> concentrations in the United States.  Should I then infer that the 
>
> radon emanates from the TMI plant?  Of course not.  As you pointed 
>
> out before, it is very hard to show cause and effect with ecologic 
>
> data.


 Was there anything in my post that suggested inferring that radon emanates from TMI? I cannot recall that there was, so please point it out to me.  I believe I mentioned controlling for environmental factors.


Your point is?  It's not only "hard" to show cause and effect with ecological data, it's impossible.  Correlation is not causality.


Ruth Weiner, Ph. D.

ruthweiner@aol.com