Development of competition indicators in the Norwegian general practice: Constructing a postal code-specific Herfindahl-Hirschman index applying STATA software

Xing Chen and Geir Godager
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Xing Chen: Department of Health Management and Health Economics, Postal: HERO / Department of Health Management and Health Economics, P.O. Box 1089 Blindern, NO-0317 Oslo, Norway

No 2011:1, HERO Online Working Paper Series from University of Oslo, Health Economics Research Programme

Abstract: The purpose of this text is to describe a procedure that can be used to construct a Herfindahl-Hirschman index of market concentration based on the following two pieces of information:

a) An output measure of individual producers located in areas identified with a postal code.

b) A matrix containing information about the distances between the (centers of) the areas defined by postal codes.

The examples presented in this text are from the market for general practitioners’ services in Norway, but applying the suggested procedures to other output measures should be straight forward. The STATA commands necessary to construct the index are provided.

Keywords: Herfindahl-Hirschman index; General practitioner; primary health care; market concentration; Norway (search for similar items in EconPapers)
JEL-codes: I18 J14 (search for similar items in EconPapers)
Pages: 11 pages
Date: 2011-10-25
New Economics Papers: this item is included in nep-com and nep-hme
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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