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@techreport{NBERw21855,
 title = "Informational Frictions and Practice Variation: Evidence from Physicians in Training",
 author = "Chan, David C, Jr",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "21855",
 year = "2016",
 month = "January",
 doi = {10.3386/w21855},
 URL = "http://www.nber.org/papers/w21855",
 abstract = {Substantial practice variation across physicians for seemingly similar patients remains an unresolved puzzle. This paper studies physicians in training to explore the behavioral foundations of practice variation. A discontinuity in the formation of teams reveals a large contribution of relative experience in the size of practice variation. Among the same physician trainees, convergence towards a common practice differs by practice environment, with more convergence in specialist-driven services. Rich trainee characteristics and training histories, including the practice styles of prior supervising physicians, explain little if any variation. These findings suggest a major role for informational frictions in the origins of practice variation.},
}