topic Re: proc logistic with non-proportional odds in Statistical Procedures

proc logistic with non-proportional odds

drshashlik — Mon, 27 May 2019 18:58:07 GMT

Hi all,

In SAS9.4 it is possible to run proc logistic with non-proportional odds by specifying '/unequalslopes' at the end of the model statement.

I now need to do this in an earlier version of SAS in which this option is not available.

Any suggestions how I can do this?

thank you!

Re: proc sql with non-proportional odds

PaigeMiller — Mon, 27 May 2019 18:44:14 GMT

What version of SAS do you have?

And why does your title talk about PROC SQL?

Re: proc sql with non-proportional odds

PeterClemmensen — Mon, 27 May 2019 18:47:41 GMT

What does this have to do with PROC SQL?

Re: proc sql with non-proportional odds

drshashlik — Mon, 27 May 2019 18:56:49 GMT

very sorry - should be proc logistic. apologies.

Re: proc sql with non-proportional odds

drshashlik — Mon, 27 May 2019 18:58:54 GMT

very sorry - should be proc logistic.
I have sas9.3, but it pre-dates the unequal slopes option.

Re: proc logistic with non-proportional odds

StatDave — Tue, 28 May 2019 13:46:35 GMT

The addendum at the end of this note on the partial proportional odds model shows how it can be done using PROC NLMIXED. Note that there have been at least six releases of SAS since 9.3. I strongly encourage you to upgrade to take advantage of the many new features that have been added over the years.

Re: proc logistic with non-proportional odds

Ksharp — Tue, 28 May 2019 14:10:52 GMT

Could you try PROC PROBIT ? or PROC GENMOD for GEE model ?

Re: proc logistic with non-proportional odds

drshashlik — Tue, 28 May 2019 22:48:46 GMT

Thank you, StatDave,

I would dearly love to upgrade to the newest, shiniest, version of SAS, but alas my employer is a government agency with a ZBB for stuff they don't understand. Thus I suffer.