proc glm data= dummy;
class sex;
model loglac= mddtotal age sex;
run;
I'm not 100% sure I know what you mean by "stratify" in the context of GLM modeling, but you can add SEX into the CLASS statement; you can also include interactions of SEX with AGE and MDDTOTAL, this effectively computes different intercepts and different slopes for AGE and MDDTOTAL depending on the value of SEX.
--
Paige Miller