Wednesday, September 29, 2021

How to list all unique values based on value of another variable?

Hi all, I am conducting a cross-country analysis.
I have a variable named developed has the value of 1 if this country is a developed country and 0 otherwise. Now I want to list all developed countries (variable's name is country) where developed=1, can I ask what I should do then?

Many thanks and warm regards.

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