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Competition on Unobserved Attributes: The Case of the Hospital Industry

La concurrence sur des caractéristiques inobservées: le cas des hôpitaux

Philippe Choné () and Lionel Wilner ()
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Philippe Choné: CREST - Centre de Recherche en Économie et Statistique - ENSAI - Ecole Nationale de la Statistique et de l'Analyse de l'Information [Bruz] - GENES - Groupe des Écoles Nationales d'Économie et Statistique - X - École polytechnique - IP Paris - Institut Polytechnique de Paris - ENSAE Paris - École Nationale de la Statistique et de l'Administration Économique - GENES - Groupe des Écoles Nationales d'Économie et Statistique - IP Paris - Institut Polytechnique de Paris - CNRS - Centre National de la Recherche Scientifique
Lionel Wilner: INSEE - Institut national de la statistique et des études économiques (INSEE), CREST-INSEE - Centre de Recherche en Economie et en Statistique - ENSAI - Ecole Nationale de la Statistique et de l'Analyse de l'Information [Bruz] - GENES - Groupe des Écoles Nationales d'Économie et Statistique - ENSAE Paris - École Nationale de la Statistique et de l'Administration Économique - GENES - Groupe des Écoles Nationales d'Économie et Statistique - IP Paris - Institut Polytechnique de Paris - INSEE - Institut national de la statistique et des études économiques (INSEE)

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Abstract: To assess strategic interactions in industries where endogenous product characteristics are unobserved to the researcher, we propose an empirical method that brings a competition-in-utility-space framework to the data. We apply the method to the French hospital industry. The utilities offered to patients are inferred from local market shares under AKM exclusion restrictions. The hospitals' objective functions are identified thanks to the gradual introduction of stronger financial incentives over the period of study. Offering more utility to each patient entails incurring higher costs per patient, implying that utilities are mostly strategic complements. Counterfactual simulations show that stronger incentives affect market shares but have little impact on the total number of patient admissions. We quantify the resulting gains for patients and losses for hospitals.

Keywords: hospital choice; Competition in utility space; financial incentives; payment reform; choix d'hôpital; réforme tarifaire; incitations financières; Concurrence en utilité (search for similar items in EconPapers)
Date: 2019-09
Note: View the original document on HAL open archive server: https://insee.hal.science/hal-05398428v1
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