Hi,
 I am comparing SAS commands with R.
consider i want to assess the effect of one exposure(like CAT where 1
equals high and 0 equals low) and one cofounding variable (like
cholesterol leve,CHL) on a diseasee variable (like CHD).
In SAS to get a numerical value for the odds ratio, consider, for
example, the specific values CHL equal to 220 and HPT equal to 1 when
the model contains interaction terms like (CC=CAT*CHL) the command
is:

PROC GENMOD data=l2 DESCENDING;
MODEL CHD=CAT CHL CC/LINK=LOGIT DIST=BINOMIAL;
ESTIMATE CAT 1 CC 200 /EXP;
RUN;

I just want to find such a command in R. Its not a homework.

Amin


On Wed, Feb 6, 2013 at 9:46 PM, Bert Gunter <gunter.berton@gene.com> wrote:

> 1. Please do not double post.
>
> 2. This is a statistics, not an R question. Post on a statistics list,
> like stats.stackexchange.com instead.
>
> 3. Is this a homework question? -- we don't do homework here.
>
> -- Bert
>
> On Wed, Feb 6, 2013 at 8:59 AM, Aminreza Aamini <amin.r.fan@gmail.com>
> wrote:
> > Dear all,
> >
> > How can i obtain odds ratio in logistic regression when the model
> > contains interaction terms in R?
> > how can i obtain OR for a special case?
> > Thanks in advance for any help.
> > Amin
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
>
>
> --
>
> Bert Gunter
> Genentech Nonclinical Biostatistics
>
> Internal Contact Info:
> Phone: 467-7374
> Website:
>
> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
>

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