1. For additional details on the CTS design, see P. Kemper et al. “The Design of the Community Tracking Study: A Longitudinal Study of Health System Change and Its Effects on People,”Inquiry(Summer 1996 ): 195 –206
2. For additional details from the two previous site-visit rounds, see J. Grossman , “Health Plan Competition in Local Markets,”Health Services Research(April 2000 , Part I): 17 –35
3. ; L. Kohn , “Organizing and Managing Care in a Changing Health System,”Health Services Research(April 2000 , Part I): 37 –52
4. ; and C.S. Lesser and P.B. Ginsburg, “Update on the Nation’s Health Care System: 1997–1999,”Health Affairs(Nov/Dec 2000 ): 206 –216.
5. S. Trude et al. “Employer-Sponsored Health Insurance: Pressing Problems, Incremental Change,”Health Affairs(Jan/Feb 2002 ): 66 –75.