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Physician-Induced Demand: Evidence from China’s Drug Price Zero-Markup Policy

Hanming Fang (), Xiaoyan Lei (), Julie Shi () and Lisa Xuejie Yi ()
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Xiaoyan Lei: Peking University
Lisa Xuejie Yi: Stanford University

PIER Working Paper Archive from Penn Institute for Economic Research, Department of Economics, University of Pennsylvania

Abstract: We use a natural experiment in China’s health care reform, in which the government mandated zero markups for drugs sold in public hospitals, to study physician-induced demand for medical care. We develop a theoretical model that robustly predicts that the drug price zero markup policy (ZMP) will lead to a reduction in the demand for drugs but an increase in the demand for non-drug services, only when the demands for drugs and non-drug services are at least partially physician induced. Our model also yields testable predictions of the impact of the ZMP regarding the equilibrium number of treated patients. Exploiting the staggered rollout of the ZMP and a unique claims data set, we find that, at the admission level, the reform decreases drug expenses by 63.4 log points (47.0 percent), but the reduction in drug expenses is almost fully substituted by the increases in expenses for non-drug services. Quantitatively similar results are also obtained at the physician and at the hospital levels. We also show that the ZMP reduces the number of patients in the treated hospitals, as predicted by the model, and that the reform has little impact on the quality of health care proxied by the readmission rate.

Keywords: Physician-Induced Demand; Zero Markup Policy (search for similar items in EconPapers)
JEL-codes: I11 I18 (search for similar items in EconPapers)
Pages: 46 pages
Date: 2021-06-28
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