Radiating influence? Spillover effects among physicians

Giovanni van Empel (), Daniel Avdic (), Umair Khalil (), Johannes S. Kunz (), Bo Lagerqvist () and Johan Vikström ()
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Giovanni van Empel: Australian National University
Umair Khalil: Deakin University
Johannes S. Kunz: Monash University
Bo Lagerqvist: UCR and SCAAR Study Group, Uppsala University
Johan Vikström: IFAU and Uppsala University

No 2025-01, Working Papers from Centre for Health Economics, Monash University

Abstract: We study spillovers in healthcare by exploring how cardiologists’ treatment choices are influenced by their peers. We employ clinical quality data from Sweden on the use of radiation in diagnostic angiography procedures. To account for endogeneity concerns, we instrument peers’ weekly radiation output using the plausibly exogenous arrival of emergency cases they handle. Our estimates suggest that focal cardiologists increase their radiation output by 0.7 standard deviations for each standard deviation increase in their peers’ output. These workplace spillovers lead to improved quality of care. Focal physicians detect additional blocked arteries, which increases treatment intensity and leads to lower risk-adjusted patient mortality.

Keywords: peer effect; team management; physician practice style; healthcare quality (search for similar items in EconPapers)
JEL-codes: D83 I11 I12 J24 M12 M54 (search for similar items in EconPapers)
Date: 2025-01
New Economics Papers: this item is included in nep-hea and nep-lma
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