The Effects of Market Competition on Cardiologists’ Adoption of Transcatheter Aortic Valve Replacement

The objective of this study was to assess the relationship between the market concentration of physician group practices and the adoption of TAVR in its first years of use. Research Design: This was a retrospective cohort study. Subjects: Physician group practices (n=5116) providing interventional cardiology services in the United States from May 1, 2012, to December 31, 2014. Measures: The first use of TAVR as indicated by a fee-for-service Medicare claim. Covariates including characteristics of the physician groups (ie, case volume, hospital affiliation, mean patient risk) as well as county-level and market-level characteristics. Results: By the close of 2014, 9.3% of practices had adopted TAVR. Cox proportional hazards models revealed a hazard ratio of 1.26 (95% confidence interval: 1.16–1.37, P
Source: Medical Care - Category: Health Management Tags: Original Articles Source Type: research