topic Re: Issue with CLASS statement in PROC MIXED in SAS Programming

Issue with CLASS statement in PROC MIXED

alexandra-vita — Fri, 18 Oct 2024 19:25:41 GMT

I am trying to use PROC MIXED for the first time with my own data (I have only used this in a biostats course with a pre-defined template for the given data) and I keep receiving this error for my CLASS statement:

"ERROR 180-322: Statement is not valid or it is used out of proper order."

My code is below:

PROC MIXED
DATA= GGGImp.TNFa METHOD= REML;
CLASS= treatment (ref="A") sequence (ref= "AB") period (ref= "P1") time (ref="V1");
MODEL TNFalpha = sequence treatment time period sequence*time period*treatment / SOLUTION;
RANDOM intercept / SUBJECT=subjID g vcorr;
RUN;

What's interesting is this general template worked for similar data in my biostats course, so not sure where I am going wrong here. Any help is extremely appreciated.

Re: Issue with CLASS statement in PROC MIXED

ballardw — Fri, 18 Oct 2024 19:39:44 GMT

Remove the = immediately after Class.

Should look like:

CLASS  treatment (ref="A") sequence (ref= "AB") period (ref= "P1") time (ref="V1");

Re: Issue with CLASS statement in PROC MIXED

alexandra-vita — Fri, 18 Oct 2024 19:44:04 GMT

Wow, thank you so much, it worked!

Re: Issue with CLASS statement in PROC MIXED

JOL — Fri, 18 Oct 2024 19:48:02 GMT

Try removing the "=" sign after class

CLASS treatment (ref="A") sequence (ref= "AB") period (ref= "P1") time (ref="V1");