[R] Logistic Regression in R (SAS -like output)

[Gabor Grothendieck]

On Mon, Aug 9, 2010 at 6:43 AM, Harsh <singhalblr at gmail.com> wrote:
> Hello useRs,
>
> I have a problem at hand which I'd think is fairly common amongst
> groups were R is being adopted for Analytics in place of SAS.
> Users would like to obtain results for logistic regression in R that
> they have become accustomed to in SAS.
>
> Towards this end, I was able to propose the Design package in R which
> contains many functions to extract the various metrics that SAS
> reports.
>
> If you have suggestions pertaining to other packages, or sample code
> that replicates some of the SAS outputs for logistic regression, I
> would be glad to hear of them.
>
> Some of the requirements are:
> - Stepwise variable selection for logistic regression
> - Choose base level for factor variables
> - The Hosmer-Lemeshow statistic
> - concordant and discordant
> - Tau C statistic
>

For stepwise logistic regression using AIC see:

library(MASS)
?stepAIC

For specifying reference level:

?relevel