topic Re: Estimate for reference category calculation in New SAS User

Estimate for reference category calculation

kcodo — Sun, 03 Feb 2019 22:00:59 GMT

How do I get the point estimates for the reference value in the following?

proc logistic data =WORK.shihab ;
class PainSites (ref ='2')
model Success_trials (event='1') = PainSites /clodds=wald;
run; quit;

I'm getting the following:

Pain sites 1 vs. 2

Pain sites 3 vs. 2

But I also want he point estimates for Painsites 2 as well. Any help much appreciated.

Rick_SAS — Mon, 04 Feb 2019 15:03:13 GMT

but for your simple example the "point estimate" is the value of the Intercept term because the reference parameter is assigned a coefficient of 0. A statistical discussion with more details is available in the article "Singular parameterizations, generalized inverses, and regression estimates."

kcodo — Tue, 05 Feb 2019 02:31:45 GMT

Thank you!