Consumption Externalities and Diffusion in Pharmaceutical Markets: Antiulcer Drugs
We examine the role of consumption externalities in the demand for pharmaceuticals at both the brand level and over a therapeutic class of drugs. Externalities emerge when use of a drug by others affects its value, and/or conveys information about efficacy and safety to patients and physicians. This can affect the rate of market diffusion for a new entrant, and can lead to dominance of one drug despite the availability of close substitutes. We use data for H 2 -antagonist antiulcer drugs to estimate a dynamic demand model and quantify these effects. The model has three components: an hedonic price equation that measures how the aggregate usage of a drug, as well as conventional attributes, affect brand valuation; equations relating equilibrium market shares to quality-adjusted prices and marketing levels; and diffusion equations describing the dynamic adjustment process. We find that consumption externalities influence both valuations and rates of diffusion, and that they operate at the brand and not the therapeutic class level. Copyright Blackwell Publishing Ltd. 2003.
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Volume (Year): 51 (2003)
Issue (Month): 2 (06)
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- Daniel P. Kessler & Mark McClellan, 1996. "Do Doctors Practice Defensive Medicine?," NBER Working Papers 5466, National Bureau of Economic Research, Inc.
- Sara Ellison Fisher & Iain Cockburn & Zvi Griliches & Jerry Hausman, 1997.
"Characteristics of Demand for Pharmaceutical Products: An Examination of Four Cephalosporins,"
RAND Journal of Economics,
The RAND Corporation, vol. 28(3), pages 426-446, Autumn.
- Ellison, S & Cockburn, I & Griliches, A & Hausman, J, 1996. "Characteristics of Demand for Pharmaceutical Products : an Examination of four Cephalosporins," Working papers 96-24, Massachusetts Institute of Technology (MIT), Department of Economics.
- McFadden, Daniel L., 1984. "Econometric analysis of qualitative response models," Handbook of Econometrics, in: Z. Griliches† & M. D. Intriligator (ed.), Handbook of Econometrics, edition 1, volume 2, chapter 24, pages 1395-1457 Elsevier.
- Zvi Griliches, 1998. "Patent Statistics as Economic Indicators: A Survey," NBER Chapters, in: R&D and Productivity: The Econometric Evidence, pages 287-343 National Bureau of Economic Research, Inc.
- Griliches, Zvi, 1990. "Patent Statistics as Economic Indicators: A Survey," Journal of Economic Literature, American Economic Association, vol. 28(4), pages 1661-1707, December.
- Zvi Griliches, 1990. "Patent Statistics as Economic Indicators: A Survey," NBER Working Papers 3301, National Bureau of Economic Research, Inc.
- Paul David, 1997. "Path Dependence and the Quest for Historical Economics: One More chorus of Ballad of QWERTY," Economics Series Working Papers 1997-W20, University of Oxford, Department of Economics.
- Paul A. David, 1997. "Path Dependence and the Quest for Historical Economics: One More chorus of Ballad of QWERTY," Oxford University Economic and Social History Series _020, Economics Group, Nuffield College, University of Oxford.
- Iain M. Cockburn & Aslam H. Anis, 2001. "Hedonic Analysis of Arthritis Drugs," NBER Chapters, in: Medical Care Output and Productivity, pages 439-462 National Bureau of Economic Research, Inc.
- Iain M. Cockburn & Aslam H. Anis, 1998. "Hedonic Analysis of Arthritis Drugs," NBER Working Papers 6574, National Bureau of Economic Research, Inc.
- Zvi Griliches, 1958. "Research Costs and Social Returns: Hybrid Corn and Related Innovations," Journal of Political Economy, University of Chicago Press, vol. 66, pages 419-419.
- repec:fth:harver:1473 is not listed on IDEAS
- Erik Brynjolfsson & Chris F. Kemerer, 1996. "Network Externalities in Microcomputer Software: An Econometric Analysis of the Spreadsheet Market," Management Science, INFORMS, vol. 42(12), pages 1627-1647, December.
- Erik Brynjolfsson & Chris F. Kemerer, 1993. "Network Externalities in Microcomputer Software: An Econometric Analysis of the Spreadsheet Market," Working Paper Series 158, MIT Center for Coordination Science.
- Berry, Steven & Levinsohn, James & Pakes, Ariel, 1995. "Automobile Prices in Market Equilibrium," Econometrica, Econometric Society, vol. 63(4), pages 841-890, July.
- Daniel Kessler & Mark McClellan, 1996. "Do Doctors Practice Defensive Medicine?," The Quarterly Journal of Economics, Oxford University Press, vol. 111(2), pages 353-390.
- Goolsbee, Austan & Klenow, Peter J, 2002. "Evidence on Learning and Network Externalities in the Diffusion of Home Computers," Journal of Law and Economics, University of Chicago Press, vol. 45(2), pages 317-343, October.
- Austan Goolsbee & Peter J. Klenow, 1999. "Evidence on Learning and Network Externalities in the Diffusion of Home Computers," NBER Working Papers 7329, National Bureau of Economic Research, Inc.
- Beggs, Alan W & Klemperer, Paul, 1992. "Multi-period Competition with Switching Costs," Econometrica, Econometric Society, vol. 60(3), pages 651-666, May.
- Beggs, Alan & Klemperer, Paul, 1990. "Multi-Period Competition with Switching Costs," CEPR Discussion Papers 436, C.E.P.R. Discussion Papers.
- Scharfstein, David S & Stein, Jeremy C, 1990. "Herd Behavior and Investment," American Economic Review, American Economic Association, vol. 80(3), pages 465-479, June.
- Scharfstein, David. & Stein, Jeremy C., 1988. "Herd behavior and investment," Working papers WP 2062-88., Massachusetts Institute of Technology (MIT), Sloan School of Management.
- Neil Gandal, 1994. "Hedonic Price Indexes for Spreadsheets and an Empirical Test for Network Externalities," RAND Journal of Economics, The RAND Corporation, vol. 25(1), pages 160-170, Spring.
- Z. John Lu & William S. Comanor, 1998. "Strategic Pricing Of New Pharmaceuticals," The Review of Economics and Statistics, MIT Press, vol. 80(1), pages 108-118, February.
- Stanley M. Besen & Joseph Farrell, 1994. "Choosing How to Compete: Strategies and Tactics in Standardization," Journal of Economic Perspectives, American Economic Association, vol. 8(2), pages 117-131, Spring.
- Abhijit V. Banerjee, 1992. "A Simple Model of Herd Behavior," The Quarterly Journal of Economics, Oxford University Press, vol. 107(3), pages 797-817. Full references (including those not matched with items on IDEAS)
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