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Re: st: Abnormal logistic results


From   Ras Dondo <ras.dondo@yahoo.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Abnormal logistic results
Date   Tue, 16 Oct 2012 15:31:40 -0700 (PDT)

Thanks Maarten for the advice.




----- Original Message -----
From: Maarten Buis <maartenlbuis@gmail.com>
To: statalist@hsphsun2.harvard.edu
Cc: 
Sent: Tuesday, October 16, 2012 12:22 PM
Subject: Re: st: Abnormal logistic results

On Tue, Oct 16, 2012 at 12:42 PM, Ras Dondo  wrote:
> Thanks Maarten. But will it make any difference if instead of comparing those exposed and those not exposed to drug X, I decided to compare those with the disease to those without the disease in an attempt to determine the odds of exposure to the drug?

No, because that would still involve a comparison of exposed and
non-exposed. If you want to that route, you'll have to make sure that
exposure is in no way part of your model, but I guess that exposure is
the key variable for your analysis so that is not useful. I guess the
only thing you can do with the data you have is report the raw odds
ratio, without adjusting for anything.

Hope this helps,
Maarten

---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany

http://www.maartenbuis.nl
---------------------------------
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