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Longitudinal Analysis of Generic Substitution

Dag Morten Dalen, Marilena Locatelli () and Steinar Strøm

No 3176, CESifo Working Paper Series from CESifo Group Munich

Abstract: Using an extensive longitudinal dataset extracted from the Norwegian Prescription Database (NorPD) containing all prescriptions written in the period January 2004 to June 2007, we selected two particular drugs (chemical substances) used against cholesterol. The two brand-name products on the Norwegian markets were Provachol (atc code C10AA03) and Zocor (atc code C10AA01). The generics are Provastatine and Simastatine. The model accounts for taste persistence and is estimated on panel data. We find that prices have a negative impact on transitions in the sense that an increase in the brand price will reduce the transition from generics to brand and likewise an increase in the generic price will reduce the transition from brand to generics.

Keywords: generics; substitution; microdata; random utility model; longitudinal data (search for similar items in EconPapers)
JEL-codes: C35 I18 L65 (search for similar items in EconPapers)
Date: 2010
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Related works:
Journal Article: Longitudinal Analysis of Generic Substitution (2015) Downloads
Working Paper: Longitudinal analysis of generic substitution (2010) Downloads
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