Re: Radon exposure estimates versus radon concentration

[mark sasser <duke99301@yahoo.com>]

Open the doors and windows and air the place out once
and a while it will go away. keep areas vented to
prevent this. How more simple can it be! If you are
that scared of it move. do not live near a coal burner

--- FIELDRW@aol.com wrote:
> In a message dated 00-03-15 13:47:27 Ernesto wrote:
> 
> "known" high radon level in my  house causes me to
> spend less time indoors, 
> therefore, my radon exposure is  actually lower than
> it may have been had I 
> spent more time indoors inside a  house with lower
> radon levels.   Therefore, 
> high radon levels *could* correlate  with lower
> exposures (and risks) if we 
> use this "avoidance hypothesis".
> 1) Wouldn't the only way to truly assess this effect
> be with a cohort study 
> (and
> the required time-motion tracking of exposure),
> which as mentioned before is
> prohibitively expensive?  
> 2) Has anyone assessed the effect of an individual
> 's actions to a potential 
> radon hazard once the individual is made aware of
> the potential hazard?
> ------------------ 
> Ernesto, they are two very good questions.  
> 
> You could ascertain this information using either a
> case-control or 
> prospective cohort design.  The prospective cohort
> design is prohibitively 
> expensive.  We were able to collect detailed
> retrospective mobility 
> information for each individual enrolled in the Iowa
> Radon Lung Cancer 
> Case-Control Study.  This included the number of
> hours they spent in their 
> home, in another building, and outdoors.  We also
> collected information on 
> the number of hours they spent in various parts of
> their home in the past.  
> You would be surprised how often people changed the
> location of their master 
> bedroom.  We used this information to link the
> numerous radon CONCENTRATION 
> measurments with where they spent time in order to
> get radon EXPOSURE 
> estimates.   
> 
> Regards, Bill Field
> bill-field@uiowa.edu
>
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=====
mark sasser 
at duke99301@yahoo.com
you can also reach me at duke9930@concentric.net

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information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html