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.
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
Volume (Year): 51 (2003)
Issue (Month): 2 (06)
|Contact details of provider:|| Web page: http://www.blackwellpublishing.com/journal.asp?ref=0022-1821 |
|Order Information:||Web: http://www.blackwellpublishing.com/subs.asp?ref=0022-1821|
References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Beggs, Alan W & Klemperer, Paul, 1992.
"Multi-period Competition with Switching Costs,"
Econometric Society, vol. 60(3), pages 651-66, May.
- 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.
- 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.
- Erik Brynjolfsson & Chris F. Kemerer, 1996.
"Network Externalities in Microcomputer Software: An Econometric Analysis of the Spreadsheet Market,"
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.
- Banerjee, Abhijit V, 1992. "A Simple Model of Herd Behavior," The Quarterly Journal of Economics, MIT Press, vol. 107(3), pages 797-817, August.
- Iain M. Cockburn & Aslam H. Anis, 1998.
"Hedonic Analysis of Arthritis Drugs,"
NBER Working Papers
6574, National Bureau of Economic Research, Inc.
- Scharfstein, David S & Stein, Jeremy C, 1990.
"Herd Behavior and Investment,"
American Economic Review,
American Economic Association, vol. 80(3), pages 465-79, June.
- 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, 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.
- Zvi Griliches, 1990. "Patent Statistics as Economic Indicators: A Survey," NBER Working Papers 3301, National Bureau of Economic Research, Inc.
- 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.
- 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.
- 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 317-43, 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.
- 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.
- Daniel P. Kessler & Mark McClellan, 1996. "Do Doctors Practice Defensive Medicine?," NBER Working Papers 5466, National Bureau of Economic Research, Inc.
- Berry, Steven & Levinsohn, James & Pakes, Ariel, 1995. "Automobile Prices in Market Equilibrium," Econometrica, Econometric Society, vol. 63(4), pages 841-90, July.
- 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.
- 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.
- repec:fth:harver:1473 is not listed on IDEAS
- Kessler, Daniel & McClellan, Mark, 1996. "Do Doctors Practice Defensive Medicine?," The Quarterly Journal of Economics, MIT Press, vol. 111(2), pages 353-90, May.
- 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.
When requesting a correction, please mention this item's handle: RePEc:bla:jindec:v:51:y:2003:i:2:p:243-270. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Wiley-Blackwell Digital Licensing)or (Christopher F. Baum)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.