Selective-referral and unobserved patient heterogeneity - Bias in the volume-outcome relationship

Corinna Hentschker and Roman Mennicken (roman.mennicken@lvr.de)

VfS Annual Conference 2014 (Hamburg): Evidence-based Economic Policy from Verein für Socialpolitik / German Economic Association

Abstract: This paper examines the causal effect of volume on outcome on the example of patients with a hip fracture. We use an instrumental variable approach and consider both the practice-makes-perfect and selective-referral hypothesis as well as unobserved patient heterogeneity. Our results indicate that unobserved severity drives the results in the volume-outcome relationship for hip fracture patients and with this the practice-makes-perfect hypothesis has an even stronger effect on hospital quality than expected so far.

JEL-codes: I11 I12 I18 (search for similar items in EconPapers)
Date: 2014
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https://www.econstor.eu/bitstream/10419/100299/1/VfS_2014_pid_261.pdf (application/pdf)

Related works:
Working Paper: Selective-referral and Unobserved Patient Heterogeneity – Bias in the Volume-outcome Relationship (2014)
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Persistent link: https://EconPapers.repec.org/RePEc:zbw:vfsc14:100299

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