[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: interaction in linear regression

Subject   st: interaction in linear regression
Date   Mon, 21 Sep 2009 09:29:04 -0300

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

*   For searches and help try:

© Copyright 1996–2015 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index