I have estimated housing affordability (RRI) by fixed effects using the equation below:
The 'r' represents regional effects and 't' represents time effects.
This estimation works in Stata but are there any problems with including an interaction term which contains region? I couldn't find any information about this type of interaction. I get significant results so can I correctly conclude that there is an additional effect from the independent variables x1 and x2 from region one relative to the other regions.
I greatly appreciate any help. Thanks