I know this is an easy question but I'm trying to get the format for the regression equation for a country and year fixed effect model I have built on Stata.
My code is as follows:
xtset country_code xtreg difference i.year alcoholwarning cigarettewarning warningintroduced, fe robust
This is a country and year fixed effect model, but I have done the year fixed effects using the i.year command (I'm not sure how else to include both fixed effects on stata).
'difference' refers to differenced data on the percentage of poeple who smoke/drink in each country, and 'alcoholwarning' 'cigarettewarning' and 'warningintroduced' are all dummy variables. I'm just not sure how this would translate into a generic regression equation?
Also, would you say it is worth including fe robust and why?