NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

The Changing Effect of HMO Market Structure: An Analysis of Penetration, Concentration, and Ownership Between 1994-2005

Yu-Chu Shen, Vivian Wu, Glenn Melnick

NBER Working Paper No. 13775
Issued in February 2008

---- Acknowledgements -----

We gratefully acknowledge funding for this research from grant #56110 under the Robert Wood Johnson Foundation's Changes in Health Care Financing and Organization (HCFO) Initiative. We thank Robert Reddick for providing the hospital competition measures; Laurence Baker for providing historical HMO penetration data; and Shou-tzu Lin for excellent programming assistance. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research.

return to bibliography page

 
Publications
Activities
Meetings
Data
People
About

Support
National Bureau of Economic Research, 1050 Massachusetts Ave., Cambridge, MA 02138; 617-868-3900; email: info@nber.org

Contact Us