Does Price Reveal Poor-Quality Drugs? Evidence from 17 Countries
Focusing on 8 drug types on the WHO-approved medicine list, we constructed an original dataset of 899 drug samples from 17 low- and median-income countries and tested them for visual appearance, disintegration, and analyzed their ingredients by chromatography and spectrometry. Fifteen percent of the samples fail at least one test and can be considered substandard. After controlling for local factors, we find that failing drugs are priced 13.6-18.7% lower than non-failing drugs but the signaling effect of price is far from complete, especially for non-innovator brands. The look of the pharmacy, as assessed by our covert shoppers, is weakly correlated with the results of quality tests. These findings suggest that consumers are likely to suspect low quality from market price, non-innovator brand and the look of the pharmacy, but none of these signals can perfectly identify substandard and counterfeit drugs. Indeed, many cheaper non-innovator products pass all quality tests, and are genuine generic drugs.
|Date of creation:||Mar 2011|
|Date of revision:|
|Publication status:||Published in the Journal of Health Economics 30 (2011) 1150-1163|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
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- Rizzo, John & Zeckhauser, Richard Jay, 2012.
"Generic Script Share and the Price of Brand-Name Drugs: The Role of Consumer Choice,"
8057977, Harvard Kennedy School of Government.
- John Rizzo & Richard Zeckhauser, 2009. "Generic script share and the price of brand-name drugs: the role of consumer choice," International Journal of Health Economics and Management, Springer, vol. 9(3), pages 291-316, September.
- Danzon, Patricia M & Chao, Li-Wei, 2000. "Does Regulation Drive out Competition in Pharmaceutical Markets?," Journal of Law and Economics, University of Chicago Press, vol. 43(2), pages 311-57, October.
- Grossman, Gene M & Shapiro, Carl, 1988.
American Economic Review,
American Economic Association, vol. 78(1), pages 59-75, March.
- Gene M. Grossman & Carl Shapiro, 1988. "Foreign Counterfeiting of Status Goods," The Quarterly Journal of Economics, Oxford University Press, vol. 103(1), pages 79-100.
- Richard G. Frank & David S. Salkever, 1995.
"Generic Entry and the Pricing of Pharmaceuticals,"
NBER Working Papers
5306, National Bureau of Economic Research, Inc.
- Russell Cooper & Thomas W. Ross, 1984. "Prices, Product Qualities and Asymmetric Information: The Competitive Case," Review of Economic Studies, Oxford University Press, vol. 51(2), pages 197-207.
- Anis, Aslam H. & Wen, Quan, 1998. "Price regulation of pharmaceuticals in Canada," Journal of Health Economics, Elsevier, vol. 17(1), pages 21-38, January.
- Gene M. Grossman & Carl Shapiro, 1986. "Foreign Counterfeiting of Status Goods," NBER Working Papers 1915, National Bureau of Economic Research, Inc.
- George J. Stigler, 1961. "The Economics of Information," Journal of Political Economy, University of Chicago Press, vol. 69, pages 213.
- Yi Qian, 2008. "Impacts of Entry by Counterfeiters," The Quarterly Journal of Economics, Oxford University Press, vol. 123(4), pages 1577-1609.
- Carl Shapiro, 1982. "Consumer Information, Product Quality, and Seller Reputation," Bell Journal of Economics, The RAND Corporation, vol. 13(1), pages 20-35, Spring.
- Ginger Zhe Jin & Andrew Kato, 2006. "Price, quality, and reputation: evidence from an online field experiment," RAND Journal of Economics, RAND Corporation, vol. 37(4), pages 983-1005, December.
- Danzon, Patricia M. & Chao, Li-Wei, 2000. "Cross-national price differences for pharmaceuticals: how large, and why?," Journal of Health Economics, Elsevier, vol. 19(2), pages 159-195, March.
- Klein, Benjamin & Leffler, Keith B, 1981. "The Role of Market Forces in Assuring Contractual Performance," Journal of Political Economy, University of Chicago Press, vol. 89(4), pages 615-41, August.
- Asher Wolinsky, 1983. "Prices as Signals of Product Quality," Review of Economic Studies, Oxford University Press, vol. 50(4), pages 647-658.
- Lanjouw, Jean O. & Cockburn, Iain M., 2001. "New Pills for Poor People? Empirical Evidence after GATT," World Development, Elsevier, vol. 29(2), pages 265-289, February.
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