We are working with a linear regression model that includes interaction terms. The regression output in SAS gives us parameter estimates for the interaction term, but my question is what if we wanted to look at the different contrasts between the two variables.
Interaction treat*sex. treat has two levels exp and control. our output gives the estimate for treat*sex but what about the estimates for exp*sex and control*sex?
In other procs I know there are options available such as the contrast, estimate and lsmeans statements. Is there something similar in proc reg? We have solved this problem by writing some code but wanted to know if there was an option built into proc reg that we were not aware of.
Secondly, if there was how would we then summarize the data using proc mianalyze?