Date: Wed, 12 Mar 1997 10:35:13 CST
Reply-To: Chris Rellinger <cjr@KESTNBAUM.COM>
Sender: "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From: Chris Rellinger <cjr@KESTNBAUM.COM>
Subject: Tobit model via PROC LIFEREG
In the SAS/STAT User's Guide, Volume 2, Version 6, 4th Edition,
on Page 1024, it describes how to go about using PROC LIFEREG to do a
tobit model. I can get this to work great and in fact it sorts my
observations pretty well according to the response variable. However,
using the output out= option and p= option, I cannot get meaningful
predictions. They are no where near the actuals in either my modeling
OR validation samples.
Is there a way to do some type of transform to the output scores
or use some other option to get valid, accurate scores?
My code looks like this:
model (low, resp) = var1 var2 var3 / d=normal;
output out=out1 p=pred;
I'll be glad to get any help I can at this point. I have called
tech support and I am still waiting. Thanx in advance.