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Choices and Outcomes in Assignment Mechanisms: The Allocation of Deceased Donor Kidneys

Nikhil Agarwal, Charles Hodgson and Paulo Somaini

No 28064, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: While the mechanism design paradigm emphasizes notions of efficiency based on agent preferences, policymakers often focus on alternative objectives. School districts emphasize educational achievement, and transplantation communities focus on patient survival. It is unclear whether choice-based mechanisms perform well when assessed based on these outcomes. This paper evaluates the assignment mechanism for allocating deceased donor kidneys on the basis of patient life-years from transplantation (LYFT). We examine the role of choice in increasing LYFT and compare equilibrium assignments to benchmarks that remove choice. Our model combines choices and outcomes in order to study how selection affects LYFT. We show how to identify and estimate the model using instruments derived from the mechanism. The estimates suggest that the design in use selects patients with better post-transplant survival prospects and matches them well, resulting in an average LYFT of 8.78, which is 0.92 years more than a random assignment. However, the maximum aggregate LYFT is 13.84. Realizing the majority of the gains requires transplanting relatively healthy patients, who would have longer life expectancies even without a transplant. Therefore, a policymaker faces a dilemma between transplanting patients who are sicker and those for whom life will be extended the longest.

JEL-codes: C36 D47 I14 (search for similar items in EconPapers)
Date: 2020-11
New Economics Papers: this item is included in nep-des and nep-hea
Note: AG EH
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Citations: View citations in EconPapers (10)

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