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RE: st: count nr of countries

From   Nick Cox <>
To   "''" <>
Subject   RE: st: count nr of countries
Date   Wed, 9 Feb 2011 16:53:42 +0000

-group()- is strictly an -egen- function, not an option. 

Or: -tab country- and -ret li-. 


Justina Fischer

generate a separate id for your countries, using egen with the group-option, and the simply count your observations of your new id-variable

Tharshini Thangavelu 
> I have a panel dataset where I follow firms cross countries over the time
> period 1998-2010. I have generated id and wants to count 
> the nr of countries in my data set. How I do this? 

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