|Date: ||Sun, 19 Jan 1997 23:20:57 -0500|
|Reply-To: ||tom <tjb@ACPUB.DUKE.EDU>|
|Sender: ||"SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>|
|From: ||tom <tjb@ACPUB.DUKE.EDU>|
|Organization: ||Duke University, Durham, NC, USA|
|Subject: ||Re: [q] crossvalidation on logistic regression|
In article <email@example.com>, firstname.lastname@example.org
(Benjamin Chan) wrote:
> For observations in your validation sample, set a weight variable to 0.
> For observations in your testing sample, set the weight to 1. Concatenate
> the two datasets and run PROC LOGISTIC with the WEIGHT statement. The
> model fit will exclude validation records (since these are weight by 0).
> However, the OUTPUT statement calculates predicted values, xbetas, etc, on
> the entire dataset.
This worked. Cool. Thanks a lot.