Covariavel no SAS

[jcjerim]

I have a problem:
I'm using the following:
PROC MIXED;
CLASS Genotype;
MODEL sheep weight=age year of birth sex;
RANDOM age of mother;
RUN;

I want to add two covariates to the model. So my question is where in the model can I put the covariates that I defined for example, father's weight, father's age.

Thank you very much

[PaigeMiller · Accepted solution]

You put the covariates in the MODEL statement to the right of the equal sign, it doesn't matter where.

[Ksharp]

Are these " two covariates" FIXED effect or RANDOM effect. if they are FIXED,put them into MODEL statement, otherwise put them into RANDOM statement.