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Price Sensitivity of Demand for Prescription Drugs: Exploiting a Regression Kink Design

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Author Info

  • Simonsen, Marianne

    (School of Economics and Management)

  • Skipper, Lars

    ()
    (Department of Economics, Aarhus School of Business)

  • Skipper, Niels

    (School of Economics and Management)

Abstract

This paper investigates price sensitivity of demand for prescription drugs using drug purchase records for at 20% random sample of the Danish population. We identify price responsiveness by exploiting exogenous variation in prices caused by kinked reimbursement schemes and implement a regression kink design. Thus, within a unifying framework we uncover price sensitivity for different subpopulations and types of drugs. The results suggest low average price responsiveness with corresponding price elasticities ranging from -0.08 to -0.25, implying that demand is inelastic. Individuals with lower education and income are, however, more responsive to the price. Also, essential drugs that prevent deterioration in health and prolong life have lower associated average price sensitivity.

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Bibliographic Info

Paper provided by University of Aarhus, Aarhus School of Business, Department of Economics in its series Working Papers with number 10-1.

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Length: 49 pages
Date of creation: 15 Jan 2010
Date of revision:
Handle: RePEc:hhs:aareco:2010_001

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Postal: The Aarhus School of Business, Prismet, Silkeborgvej 2, DK 8000 Aarhus C, Denmark
Phone: +45 89 486396
Fax: +45 8615 5175
Web page: http://www.asb.dk/departments/nat.aspx
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Related research

Keywords: Prescription drugs; price; reimbursement schemes; regression kink design;

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References

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  1. David Card & David S. Lee & Zhuan Pei, 2009. "Quasi-Experimental Identification and Estimation in the Regression Kink Design," Working Papers 1206, Princeton University, Department of Economics, Industrial Relations Section..
  2. Jesse Rothstein & Cecilia Elena Rouse, 2007. "Constrained After College: Student Loans and Early Career Occupational Choices," NBER Working Papers 13117, National Bureau of Economic Research, Inc.
  3. Martin Gaynor & Jian Li & William B. Vogt, 2006. "Is Drug Coverage a Free Lunch? Cross-Price Elasticities and the Design of Prescription Drug Benefits," NBER Working Papers 12758, National Bureau of Economic Research, Inc.
  4. Paul Contoyannis & Jeremiah Hurley & Paul Grootendorst & Sung-Hee Jeon & Robyn Tamblyn, 2005. "Estimating the price elasticity of expenditure for prescription drugs in the presence of non-linear price schedules: an illustration from Quebec, Canada," Health Economics, John Wiley & Sons, Ltd., vol. 14(9), pages 909-923.
  5. Jean-Pierre Florens & James J. Heckman & Costas Meghir & Edward J. Vytlacil, 2008. "Identification of Treatment Effects Using Control Functions in Models with Continuous, Endogenous Treatment and Heterogeneous Effects," NBER Working Papers 14002, National Bureau of Economic Research, Inc.
  6. Amitabh Chandra & Jonathan Gruber & Robin McKnight, 2007. "Patient Cost-Sharing, Hospitalization Offsets, and the Design of Optimal Health Insurance for the Elderly," NBER Working Papers 12972, National Bureau of Economic Research, Inc.
  7. Susan Dynarski & Jonathan Gruber & Danielle Li, 2011. "Cheaper by the Dozen: Using Sibling Discounts at Catholic Schools to Estimate the Price Elasticity of Private School Attendance," Working Papers 11-34, Center for Economic Studies, U.S. Census Bureau.
  8. Jonathan Guryan, 2001. "Does Money Matter? Regression-Discontinuity Estimates from Education Finance Reform in Massachusetts," NBER Working Papers 8269, National Bureau of Economic Research, Inc.
  9. Nielsen, Helena Skyt & Sørensen, Torben & Taber, Christopher, 2008. "Estimating the Effect of Student Aid on College Enrollment: Evidence from a Government Grant Policy Reform," IZA Discussion Papers 3785, Institute for the Study of Labor (IZA).
  10. Hahn, Jinyong & Todd, Petra & Van der Klaauw, Wilbert, 2001. "Identification and Estimation of Treatment Effects with a Regression-Discontinuity Design," Econometrica, Econometric Society, vol. 69(1), pages 201-09, January.
  11. Keeler, Emmett B & Newhouse, Joseph P & Phelps, C E, 1977. "Deductibles and the Demand for Medical Care Services: The Theory of a Consumer Facing a Variable Price Schedule under Uncertainty," Econometrica, Econometric Society, vol. 45(3), pages 641-55, April.
  12. Joseph G. Altonji & Rosa L. Matzkin, 2005. "Cross Section and Panel Data Estimators for Nonseparable Models with Endogenous Regressors," Econometrica, Econometric Society, vol. 73(4), pages 1053-1102, 07.
  13. Grossman, Michael, 1972. "On the Concept of Health Capital and the Demand for Health," Journal of Political Economy, University of Chicago Press, vol. 80(2), pages 223-55, March-Apr.
  14. Manning, Willard G, et al, 1987. "Health Insurance and the Demand for Medical Care: Evidence from a Randomized Experiment," American Economic Review, American Economic Association, vol. 77(3), pages 251-77, June.
  15. Moffitt, Robert, 1990. "The Econometrics of Kinked Budget Constraints," Journal of Economic Perspectives, American Economic Association, vol. 4(2), pages 119-39, Spring.
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Citations

Blog mentions

As found by EconAcademics.org, the blog aggregator for Economics research:
  1. The demand elasticity of prescription drugs
    by Economic Logician in Economic Logic on 2010-02-15 15:15:00
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Cited by:
  1. Datta Gupta, Nabanita & Kleinjans, Kristin J. & Larsen, Mona, 2011. "The Effect of an Acute Health Shock on Work Behavior: Evidence from Different Health Care Regimes," IZA Discussion Papers 5843, Institute for the Study of Labor (IZA).
  2. Herr, Annika & Suppliet, Moritz, 2012. "Pharmaceutical prices under regulation: Tiered co-payments and reference pricing in Germany," DICE Discussion Papers 48, Heinrich‐Heine‐Universität Düsseldorf, Düsseldorf Institute for Competition Economics (DICE).
  3. Lundqvist, Heléne & Dahlberg, Matz & Mörk, Eva, 2010. "Stimulating Local Public Employment: Do General Grants Work?," Working Paper Series, Center for Labor Studies 2010:14, Uppsala University, Department of Economics.
  4. Roel van Elk & Michelle Ebens & Dinand Webbink & Adam Booij, 2011. "The effect of the supplementary grant on parental contribution in the Netherlands," CPB Discussion Paper 187, CPB Netherlands Bureau for Economic Policy Analysis.
  5. David Card & David Lee & Zhuan Pei & Andrea Weber, 2012. "Nonlinear Policy Rules and the Identification and Estimation of Causal Effects in a Generalized Regression Kink Design," NBER Working Papers 18564, National Bureau of Economic Research, Inc.
  6. Landais, Camille, 2013. "Assessing the Welfare Effects of Unemployment Benefits Using the Regression Kink Design," IZA Discussion Papers 7589, Institute for the Study of Labor (IZA).
  7. Herr, A.; & Suppliet, M.;, 2011. "Co-Payment Exemptions and Reference Prices: an Empirical Study of Pharmaceutical Prices in Germany," Health, Econometrics and Data Group (HEDG) Working Papers 11/18, HEDG, c/o Department of Economics, University of York.
  8. Niels Skipper, 2010. "On Utilization and Stockpiling of Prescription Drugs when Co-payments Increase: Heterogeneity across Types of Drugs," Economics Working Papers 2010-12, School of Economics and Management, University of Aarhus.

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