Anna A. Levine Taub
301 Lake Hall
Boston, MA, 02115
NBER Working Papers and Publications
|February 2011||The Diversity of Concentrated Prescribing Behavior: An Application to Antipsychotics|
with Anton Kolotilin, Robert S. Gibbons, Ernst R. Berndt: w16823
Physicians prescribing drugs for patients with schizophrenia and related conditions are remarkably concentrated in their choice among antipsychotic drugs. In 2007 the single antipsychotic drug prescribed by a physician accounted for 66% of all antipsychotic prescriptions written by that physician. Which particular branded antipsychotic was the prescriber's "favorite" varied widely across physicians, i.e. physician prescribing concentration patterns are diverse. Building on Frank and Zeckhauser's  characterization of physician treatments varying from "custom made" to "ready-to-wear", we construct a model of physician learning that generates a number of hypotheses. Using 2007 annual antipsychotic prescribing behavior on 17,652 physicians from IMS Health, we evaluate these predictio...