Re: Radon and Smoking

[Kai Kaletsch <info@eic.nu>]

Would that information be enough to indicate a 10% change?



3 years ago we were blessed with a child. This is a big lifestyle change and

probably affected the ventilation by a huge amount. However, I could not

tell you if it increased or decreased the overall ventilation in the house.

The doors were left open for shorter periods of time, but opened more

frequently. The dryer and bathroom fan were on more often.



Having been in the radon business for about 10 years in one way or another,

I am probably more aware of things that affect ventilation than the average

person. Could an average person be expected to recall everything that might

affect ventilation? (Looking at the heating bill might give you an unbiased

indication of changes in the winter ventilation.)



Regards,



Kai



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

From: "Field, R. William" <bill-field@uiowa.edu>

To: "Kai Kaletsch" <kai@eic.nu>

Cc: <radsafe@list.vanderbilt.edu>

Sent: Tuesday, February 12, 2002 10:57 AM

Subject: Re: Radon and Smoking





> Kai wrote:

>

> >I think what this comes down to, is that we really don't know how a lung

> >cancer diagnosis affects the ventilation in a house.

> >

> >Kai

>

>

> In the Iowa study, we collected information on window opening and other

> individual behaviors and structural factors concerning ventilation during

> the residency of the subject in the home so we do have that

> information.  This is just one of the advantages you have with a

> case-control study.

>

> Regards, Bill Field

>



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