How to calculate TypeIII SS?

[Diels_O]

Dear Professors! How can I estimate type III SS?

I would be very thankful if anyone can answer my question!

Thank you very much!

[Ksharp · Accepted solution]

Try this option "method=type3"

proc mixed data = sashelp.heart method=type3;
class status sex bp_status;
model weight =height status sex bp_status;
RUN;