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    Rebates in the Pharmaceutical Industry: Evidence from Medicines Sold in Retail Pharmacies in the U.S.
    01 Jun 2020Working Paper Summaries

    Rebates in the Pharmaceutical Industry: Evidence from Medicines Sold in Retail Pharmacies in the U.S.

    by Pragya Kakani, Michael Chernew, and Amitabh Chandra
    Retail pharmacy data illustrates it can be misleading to use list prices instead of net prices to understand pharmaceutical prices. Analysts and economists working in public policy should be extremely cautious in drawing policy conclusions based on list prices alone.
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    Author Abstract

    Rising list prices are often used to illustrate the burden of prescription drug spending, but payers routinely negotiate rebates from manufacturers that generate differences between list and net prices. List prices are easily available but net prices are confidential. We use novel data on medicines sold in a retail setting to quantify rebate growth, the sensitivity of pharmaceutical price indices to list versus net prices, and contribution of net price growth to revenue growth. From 2012 to 2017, we find average rebates increased from 32% to 48%, owing entirely to growth in rebate-levels over a product lifetime rather than shifts towards high rebate products. Annual inflation of list prices was 12% while that of net prices was 3%, implying that financial rewards to manufacturers per unit sold have not grown proportionally to list prices. This pattern is mirrored in 19 of the 20 top drug classes by revenue including insulins, where list and net price inflation were 16% and 2% annually respectively. Finally, we find price growth explains 76% of revenue growth when measured by list prices but 31% of revenue growth when measured by net prices. Moreover, new product entry is the most important factor affecting pharmaceutical revenue growth. These findings provide a cautionary note on using list prices for policy analysis.

    Paper Information

    • Full Working Paper Text
    • Working Paper Publication Date: March 2020
    • HBS Working Paper Number: NBER Working Paper Series, No. 26846
    • Faculty Unit(s): Technology and Operations Management
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    Amitabh Chandra
    Amitabh Chandra
    Henry and Allison McCance Family Professor of Business Administration
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