Stata code for Ellison, Glaeser (1997) and Krugman (1991)

[Chiara Bullo]

Hi All,

I am trying to calculate the regional specialization and industry concentration following EG(1997) and K(1991). Does Stata have a pre-packaged code that I can use for this?

For example R: https://www.researchgate.net/publica..._Toolbox_for_R

Thank you. C

[Justin Niakamal]

There are these from SSC

For Ellison/Glaeser

. ssc describe egi

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package egi from http://fmwww.bc.edu/repec/bocode/e
-------------------------------------------------------------------------------------------------------------------

TITLE
      'EGI': module to calculate Ellison and Glaeser's index of geographical concentration

DESCRIPTION/AUTHOR(S)
      
       EGI calculates Ellison and Glaeser's index of geographical
      concentration of various  industries. The module computes
      industry and region specific share of employment and also
      suitable for survey data where information up to plant level is
      available. EGI  also evaluate other components of Ellison and
      Glaeser's index like square deviation  of employment share  and
      Herfindahl index of plant level employment concentration.
      
      KW: geographical concentration
      KW: Ellison
      KW: Glaeser
      KW: Herfindahl
      
      Requires: Stata version 9
      
      Distribution-Date: 20161129
      
      Author: Jay Dev Dubey, Jawaharlal Nehru University
      Support: email [email protected]

For Krugman

. ssc describe ksi

-------------------------------------------------------------------------------------------------------------------
package ksi from http://fmwww.bc.edu/repec/bocode/k
-------------------------------------------------------------------------------------------------------------------

TITLE
      'KSI': module to compute Krugman specialization index

DESCRIPTION/AUTHOR(S)
      
       The module computes Krugman specialization index that compares
      similarity of a region's production pattern with benchmark
      reference economy (e.g. aggregate national output).
      
      KW: Krugman
      KW: specialization
      
      Requires: Stata version 9
      
      Distribution-Date: 20130413
      
      Author: Muhammad Rashid Ansari , INSEAD Business School
      Support: email [email protected]