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Re: st: Computing Herfindahl-Hirschman index


From   Antoine Terracol <Antoine.Terracol@univ-paris1.fr>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Computing Herfindahl-Hirschman index
Date   Wed, 08 Dec 2010 12:36:19 +0100


On 08/12/2010 12:35, Antoine Terracol wrote:
gen hhi=item/sum


This should of course be

gen hhi=(100*item/sum)^2

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