sample selection

[Weaver102406]

I have data for firms located in different countries.The variable that contains the country identifier is named "LOC." I am able to select one country at a time by using smpl @all if loc="country" , but I would like to include several countries in the model [but not all of them]. How do I select which countries are to be included in the sample? "

[startz]

Code: Select all

smpl if loc="country1" or loc="country2