The incidence of adverse medical outcomes under prospective payment
Article Abstract:
A study of nearly 30,000 Medicare recipients with 40,000 hospital admissions in New England, MA, was conducted to investigate the link between the implementation of the prospective payment system (PPS) and the rise in adverse medical outcomes. The results showed that due to the PPS, hospitals lost the marginal reimbursments that they used to earn from additional treatments. Declining profits were linked with a greater number of deaths occurring in the hospital or soon after discharge. Readmission rates also increased, but this was due to accounting changes rather than real changes in morbidity rates.
Publication Name: Econometrica
Subject: Mathematics
ISSN: 0012-9682
Year: 1995
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Nonparametric pricing of interest rate derivative securities
Article Abstract:
A nonparametric estimation procedure is presented for continuous-time stochastic models. The volatility function was left unrestricted and derived nonparametrically due to the dependence of the prices of derivative securities on the instantaneous volatility of the underlying process. Discrete data were used. However, estimation still remained independent on replacing the continuous-time model by discrete approximation.
Publication Name: Econometrica
Subject: Mathematics
ISSN: 0012-9682
Year: 1996
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A stochastic proportional hazard model for the force of mortality
Article Abstract:
A proportional hazard model to study stochastic volatility of Mortality rates is proposed.
Publication Name: Journal of Forecasting
Subject: Mathematics
ISSN: 0277-6693
Year: 2006
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