Hallo
My Problem: I want to perform a two way Anova with interations
Let's say
Group sex (male; female coded as 1 or 0)
Group size (small, medium, large coded as 0, 1 or 2)

I want to compare:

male-small vs male medium
male-small vs male large
male-large vs male medium

female-small vs female medium
female-small vs female large
female-large vs female medium

is there an easy way to do a two-way ANOVA with interactions in Stata using the GUI? The "easiest" way I found is to use the contrast command (from the post-estimation command) and to write a custom contrast on each field.

The command looked lilke that:
contrast {sex 1 -1}#{size 0 1 -1} {sex 1 -1}#{size 1 0 -1} {sex 1 -1}#{size 1 -1 0}, mcompare(sidak) pveffects

Can I define the post hock test using a drop down menu or something else from stata GUI?

Thanks
John