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The Impact of Hospital Mergers on Treatment Intensity and Health Outcomes: Working Paper 2011-05

Tamara Hayford

No 42753, Working Papers from Congressional Budget Office

Abstract: Objective. To analyze the impact of hospital mergers on treatment intensity and health outcomes. Data. Hospital inpatient data from California for 1990 through 2006, encompassing forty mergers. Study Design. I used a geographic-based IV approach to determine the effect of a zip code’s exposure to a merger. The merged facility’s market share represents exposure, instrumented with combined pre-merge shares. Additional specifications include the Herfindahl index (HHI), instrumented with predicted change in HHI. Results.

Date: 2011-10-06
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https://www.cbo.gov/sites/default/files/112th-cong ... spital_Mergers_1.pdf (application/pdf)

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