References
- Berndt , E . 2002 . Pharmaceuticals in US health care: determinants of quantity and price . Journal of Economic Perspectives , 16 : 45 – 66 .
- Berndt , ER , Bui , L , Reiley , DR and Urban , GL . 1995 . Information, marketing, and pricing in the US anti-ulcer drug market . The American Economic Review , 85 : 100 – 5 .
- Ellison , SF , Cockburn , I , Griliches , Z and Hausman , J . 1997 . Characteristics of demand for pharmaceutical products: an examination of four cephalosporins . The RAND Journal of Economics , 28 : 426 – 46 .
- Hellerstein , JK . 1998 . The importance of the physician in the generic versus trade-name prescription decision . The RAND Journal of Economics , 29 : 108 – 36 .
- Hurwitz , MA and Caves , RE . 1988 . Persuasion or information? Promotion and the shares of brand-name and generic pharmaceuticals . Journal of Law and Economics , 31 : 299 – 320 .
- Kaiser Family Foundation (2004) Prescription drug trends – a chartbook update, October 2004. Available at: http://www.kff.org/rxdrugs(accessed3March2006)
- Kloek , T . 1981 . OLS estimation in a model where a microvariable is explained by aggregates and contemporaneous disturbances are equicorrelated . Econometrica , 49 : 205 – 7 .
- Kolassa , EM . 1995 . Physicians’ perceptions of prescription drug prices: their accuracy and effect on the prescribing decision . Journal of Research in Pharmaceutical Economics , 6 : 23 – 37 .
- Moulton , BR . 1990 . An illustration of a pitfall in estimating the effects of aggregate variables on micro units . The Review of Economics and Statistics , 72 : 334 – 8 .
- National Institute for Health Care Management Foundation (2002) Prescription drug expenditures in 2001: another year of escalating costs, National Institute for Health Care Management Foundation, Washington, DC, May 2002. Available at: http://www.nihcm.org/spending2001.pdf (accessed 3 March 2006)
- Pepper , JV . 2002 . Robust inferences from random clustered samples: an application using data from the panel study of income dynamics . Economics Letters , 75 : 341 – 5 .
- Phelps , CE . 2003 . Health Economics , New York : Addison Wesley Publishing .
- Stern , S and Trajtenberg , M . 1998 . Empirical implications of physician authority in pharmaceutical decision-making NBER Working Paper No. 6851
- Temin , P . 1980 . Taking Your Medicine: Drug Regulation in the United States , Cambridge, MA : Harvard University Press .
- Wooldridge , JM . 2002 . Econometric Analysis of Cross Section and Panel Data , Cambridge, MA : Massachusetts Institute of Technology Press .
- Wooldridge , JM . 2003 . Cluster-sample methods in applied econometrics . American Economic Review , 93 : 133 – 8 .