Date:         Wed, 15 Aug 2007 11:15:56 -0400
Reply-To:     Kevin Roland Viel <kviel@EMORY.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Kevin Roland Viel <kviel@EMORY.EDU>
Subject:      Re: PROC GENMOD: Specifying the Working Correlation Matrix for
              Repeated Measures Data
In-Reply-To:  <BAY103-F1706D6E82B49231A4B37A7B0DE0@phx.gbl>
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Tue, 14 Aug 2007, David L Cassell wrote:

> pjmiller_57@YAHOO.COM wrote:
> >
> >Hello Everyone,
> >
> >   I'm running some GEE models using PROC GENMOD. My criterion variables
> >consist of repeated lipid measures (cholesterol, triglycrides, total
> >cholesterol to hdl ratio) from a sample of HIV patients. Values for each
> >criterion are coded as 0 for normal and 1 for elevated. Lipids in HIV
> >patients are often affected by the antiretroviral drugs they are taking. So
> >I'm using a variety of arvs to predict whether or not patients had elevated
> >lipids.

OMG!  David, where did your soapbox go?

<soapbox>
0/1 for cholesterol, TG, and TC/HDL????  Please, tell me this is not so.
Do you have the raw data?
</soapbox>

Further, do you have other meaures of liver function?  Coag data?

HTH,

Kevin


Kevin Viel, PhD
Post-doctoral fellow
Department of Genetics
Southwest Foundation for Biomedical Research
San Antonio, TX 78227