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st: -test- after -anova , sequential-


From   Joseph Coveney <jcoveney@bigplanet.com>
To   Statalist <statalist@hsphsun2.harvard.edu>
Subject   st: -test- after -anova , sequential-
Date   Tue, 22 Jul 2003 02:19:33 +0900

Is there a reason why -test- after -anova , sequential- uses partial sums of 
squares?

sysuse bpwide, clear
anova bp_after sex agegrp sex*agegrp, sequential
test agegrp

I'm trying to -test- based upon so-called SAS Type II sums of squares, here.  

Now, I can manually calculate the Type II sums of squares from the -ereturn- 
results for two -anova- runs (the difference between e(mss) from -anova depvar 
A B, sequential- and that from -anova depvar A, sequential-) to do the test, 
but it would seem more natural to have -test- acknowledge the options of the 
-anova- command that it refers to . . .

Joseph Coveney



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