Excluding one country from the sample when running the regression

[Sally Ahmed]

Hello,

I would like to run my regression without taken into consideration specific country(Countries). I assign a number for each country(from 1 to 24) so I am having 24 countries. I do not know the syntax to do that I would appreciate your help.

Best regards,
Sally

[Carlo Lazzaro]

Sally:
an advice might be (in the following code, other thungs being equal, Stata will rule out -country- #1 observation(s)):

regress y x if country>1

[Sally Ahmed]

Hi Carlo,

The country I want to exclude is no 4 so I wrote this code but there is an error I do not know how to include 2 ifs in the code kindly check this:

reg Y X i.year i.IndustryX if year>2001 & year<2019 if CountryX<4 & CountryX>4, vce (robust)

Country X represents the number I assigned for each country

[Carlo Lazzaro]

Sally:
does the following code work?

reg Y X i.year i.IndustryX if year>2001 & year<2019 & CountryX!=4, vce (robust)

[Sally Ahmed]

Hi Carlo,

Yes it works! thank you.

Best regards,
Sally