Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/76241
Authors: 
Winkelmann, Rainer
Year of Publication: 
2003
Series/Report no.: 
Working Paper, Socioeconomic Institute, University of Zurich 0307
Abstract: 
The German health care reform of 1997 provides a natural experiment for evaluating the price sensitivity of demand for physicians' services. As a part of the reform, co-payments for prescription drugs were increased step up to 200%. However, certain groups of people were exempted from the increase, providing a natural control group against which the changed demand for physicians' services of the treated, those subject to increased co-payments, can be assessed. The differences-in-differences estimates indicate that increased co-payments reduced the number of doctor visits by about 10% on an average.
Subjects: 
co-payment
moral hazard
count data
Poisson regression
differences-indifferences model
JEL: 
I11
I18
C25
Document Type: 
Working Paper

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