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Inquiry : a Journal of Medical Care Organization, Provision and Financing|January 1, 1995
Refinements to the Diagnostic Cost Group (DCG) modelR P Ellis, A AshHealth Care Management Science|November 23, 2001
Risk selection in the Massachusetts State employee health insurance programW Yu, R P Ellis, A AshSocial Science & Medicine (1982)|January 1, 1987
The revenue generating potential of user fees in Kenyan government health facilitiesR P EllisInquiry : a Journal of Medical Care Organization, Provision and Financing|January 5, 2002
Formal risk adjustment by private employersR P EllisJournal of Health Economics|September 4, 1998
Creaming, skimping and dumping: provider competition on the intensive and extensive marginsR P EllisInternational Journal for Quality in Health Care : Journal of the International Society for Quality in Health Care|September 1, 1995
The design and analysis of hospital utilization studiesA AshHealth Policy and Planning|March 24, 2000
The impact of financing and quality changes on health care demand in NigerM Chawla, R P EllisStatistics in Medicine|March 10, 1999
R2: a useful measure of model performance when predicting a dichotomous outcomeA Ash, M ShwartzInquiry : a Journal of Medical Care Organization, Provision and Financing|January 1, 1992
Alternative payment systems for hospital medical staffsJ B Mitchell, R P EllisJournal of Health Economics|December 10, 1989
Optimal payment systems for health servicesR P Ellis, T G McGuirePageof 20