Threeway interaction on additive scale

[Kjell Weyde]

Dear Statalist users,
is there any program in Stata that can be used to assess threeway interactions on an additive scale? Or does anyone know how to do such an analysis in Stata?

Best regards,
Kjell Weyde (Stata 15)

[Phil Bromiley]

You'll increase your chances of a useful answer by following the FAQ on asking questions.

If you use the factor variable notation to do your interactions, then the margins and marginsplot statements will handle much of the post-estimation analysis for you.