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Patient Welfare and Patient Compliance -- An Empirical Framework for Measuring the Benefits from Pharmaceutical Innovation

In: Medical Care Output and Productivity

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  • Paul Ellickson
  • Scott Stern
  • Manuel Trajtenberg

Abstract

The main goal of this paper is to develop an empirical framework for evaluating the patient welfare benefits arising from pharmaceutical innovation. Extending previous studies of the welfare benefits from innovation (Trajtenberg, 1990; Hausman, 1996), this paper unpacks the separate choices made by physicians and patients in pharmaceutical decisionmaking and develops an estimable econometric model which reflects these choices. Our proposed estimator for patient welfare depends on (a) whether patients comply with the prescriptions they receive from physicians and (b) the motives of physicians in their prescription behavior. By focusing on compliance behavior, the proposed welfare measure reflects a specific economic choice made by patients. We review evidence that the rate of noncompliance ranges up to 70%, suggesting an important gulf between physician prescription behavior and realized patient welfare. Since physicians act as imperfect but interested agents for their patients, the welfare analysis based on compliance must account for the nonrandom selection of patients into drugs by their physicians. The key contribution of this paper resides in integrating the choices made by both physicians and patients into a unified theoretical framework and suggesting how the parameters of such a model can be estimated from data.
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Suggested Citation

  • Paul Ellickson & Scott Stern & Manuel Trajtenberg, 2001. "Patient Welfare and Patient Compliance -- An Empirical Framework for Measuring the Benefits from Pharmaceutical Innovation," NBER Chapters, in: Medical Care Output and Productivity, pages 539-564, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberch:7641
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    References listed on IDEAS

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    Cited by:

    1. Branstetter, Lee & Chatterjee, Chirantan & Higgins, Matthew J., 2022. "Generic competition and the incentives for early-stage pharmaceutical innovation," Research Policy, Elsevier, vol. 51(10).
    2. Paris Cleanthous, 2011. "Evaluating Innovation and Moral Hazard in Pharmaceuticals," University of Cyprus Working Papers in Economics 03-2011, University of Cyprus Department of Economics.
    3. John E. Calfee & Clifford Winston & Randolph Stempski, 2002. "Direct-to-Consumer Advertising and the Demand for Cholesterol-Reducing Drugs," Journal of Law and Economics, University of Chicago Press, vol. 45(S2), pages 673-690.
    4. Lee Branstetter & Chirantan Chatterjee & Matthew J. Higgins, 2016. "Regulation and welfare: evidence from paragraph IV generic entry in the pharmaceutical industry," RAND Journal of Economics, RAND Corporation, vol. 47(4), pages 857-890, November.
    5. Karine Lamiraud & Pierre‐Yves Geoffard, 2007. "Therapeutic non‐adherence: a rational behavior revealing patient preferences?," Health Economics, John Wiley & Sons, Ltd., vol. 16(11), pages 1185-1204, November.
    6. Razzolini, Tiziano, 2004. "The Norwegian market for pharmaceuticals and the non-mandatory substitution reform of 2001: the case of enalapril," Memorandum 12/2004, Oslo University, Department of Economics.
    7. Mealem, Yosef & Siniver, Erez & Yaniv, Gideon, 2012. "Patient compliance, physician empathy and financial incentives within a principal-agent framework," Journal of Behavioral and Experimental Economics (formerly The Journal of Socio-Economics), Elsevier, vol. 41(6), pages 827-830.
    8. Manuel Coutinho Pereira, 2014. "A review of the pharmaceutical market in Portugal," Economic Bulletin and Financial Stability Report Articles and Banco de Portugal Economic Studies, Banco de Portugal, Economics and Research Department.
    9. Olivier Armantier & Soiliou Daw Namaro, 2003. "Prescription Drug Advertising and Patient Compliance: A Physician Agency Approach," Department of Economics Working Papers 03-01, Stony Brook University, Department of Economics.
    10. Lien, Hsien-Ming & Lu, Mingshan & Albert Ma, Ching-To & McGuire, Thomas G., 2010. "Progress and compliance in alcohol abuse treatment," Journal of Health Economics, Elsevier, vol. 29(2), pages 213-225, March.
    11. Sorisio, Enrico & Strøm, Steinar, 2006. "Innovation and market dynamics in the EPO market," Memorandum 12/2006, Oslo University, Department of Economics.
    12. Sacks, Daniel W., 2018. "Why do HMOs spend less? Patient selection, physician price sensitivity, and prices," Journal of Public Economics, Elsevier, vol. 168(C), pages 146-161.
    13. Anna Merino, 2003. "Demand for pharmaceutical drugs: A choice modelling experiment," Working Papers, Research Center on Health and Economics 704, Department of Economics and Business, Universitat Pompeu Fabra.
    14. Karine Lamiraud & Pierre-Yves Geoffard, 2007. "Therapeutic non-adherence: a rational behavior revealing patient preferences?," Health Economics, John Wiley & Sons, Ltd., vol. 16(11), pages 1185-1204.
    15. Paris Cleanthous, 2011. "Welfare Effects of Pharmaceutical Informative Advertising," University of Cyprus Working Papers in Economics 02-2011, University of Cyprus Department of Economics.
    16. Anna Merino, 2003. "Demand for pharmaceutical drugs: A choice modelling experiment," Economics Working Papers 704, Department of Economics and Business, Universitat Pompeu Fabra.

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    JEL classification:

    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Microeconomic Data; Data Access

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