Participation Spillover of the National Kidney Registry

Bobby W. Chung () and Roksana Ghanbariamin ()
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Bobby W. Chung: University of South Florida
Roksana Ghanbariamin: Analysis Group

No 2025-02, Working Papers from University of South Florida, Department of Economics

Abstract: This paper provides the first empirical evidence on hospital participation spillover of the National Kidney Registry (NKR), the largest kidney-exchange network in the United States. We use a unique dataset from the Scientific Registry of Transplant Recipients to define links between hospitals based on the presence of common surgeons. We find that a hospital with one more NKR connection in the last period is 1.2 to 1.5 times more likely than its no-NKR counterparts to join the NKR. The spillover concentrates among strong connections, measured by the type and the number of common surgeons. In light of the current fragmented kidney-exchange market, our finding sheds light on reducing information friction to promote new participation.

Keywords: Kidney-exchange networks; National Kidney Registry (NKR); Spillover effects (search for similar items in EconPapers)
JEL-codes: I11 L14 (search for similar items in EconPapers)
Date: 2025-05
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