Hi, everyone,
I want to test for interaction in linear regression, between two
categorical variables, and I used the following comand in STATA:
xi: regress y i.var1 i.var2 var3 i.var1*i.var2
so the model gives me more than one beta/p-values of interaction, but
ommit one category, and I would like to know the p-value of all beta.
How can I get it?
Another question is about interpretation of interaction: if only one
beta is statisticaly significant, can I interpretate that there are
interaction between the two variables?
thanks so much,
--
Lana Carneiro Almeida
Doutoranda/Depto de Nutrição
Faculdade de Saúde Pública/USP
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