The formation of physician patient sharing networks in medicare: Exploring the effect of hospital affiliation
| Autor: | Sebastian Linde |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
medicine.medical_specialty
Referral physician patient sharing Control (management) insurance networks Medicare unobserved degree heterogeneity Homophily 03 medical and health sciences Spillover effect Revealed preference 0502 economics and business medicine Humans C14 endogenous network formation Practice Patterns Physicians' 050207 economics C31 Referral and Consultation Research Articles Chicago Physician-Patient Relations homophily I11 I12 030503 health policy & services Health Policy I13 05 social sciences Confounding Hospitals United States Family medicine Complementarity (molecular biology) Pairwise comparison D85 0305 other medical science Psychology Research Article |
| Zdroj: | Health Economics |
| ISSN: | 1099-1050 1057-9230 |
| DOI: | 10.1002/hec.3936 |
| Popis: | This study explores the forces that drive the formation of physician patient sharing networks. In particular, I examine the degree to which hospital affiliation drives physicians' sharing of Medicare patients. Using a revealed preference framework where observed network links are taken to be pairwise stable, I estimate the physicians' pair‐specific values using a tetrad maximum score estimator that is robust to the presence of unobserved physician specific characteristics. I also control for a number of potentially confounding patient sharing channels, such as (a) common physician group or hospital system affiliation, (b) physician homophily, (c) knowledge complementarity, (d) patient side considerations related to both geographic proximity and insurance network participation, and (e) spillover from other collaborations. Focusing on the Chicago hospital referral region, I find that shared hospital affiliation accounts for 36.5% of the average pair‐specific utility from a link. Implications for reducing care fragmentation are discussed. |
| Databáze: | OpenAIRE |
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