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The effect of prescription drug insurance on the incidence of potentially inappropriate prescribing: evidence from Medicare Part D

Author

Listed:
  • Lee, Donghoon
  • Kim, SangJune
  • Dugan, Jerome A.

Abstract

The Medicare Part D program has been documented to increase the affordability and accessibility of drugs and improve the quality of prescription drug use; however, less is known about the equity impact of the Part D program on potentially inappropriate prescribing—specifically, incidences of polypharmacy and potentially inappropriate medication (PIM) use based on different racial/ethnic groups. Using a difference in the regression discontinuity design, we found that among Whites, Part D was associated with increases in polypharmacy and “broadly defined” PIM use, while the use of “always avoid” PIM remained unchanged. Conversely, Blacks and Hispanics reported no changes in such drug utilization patterns.

Suggested Citation

  • Lee, Donghoon & Kim, SangJune & Dugan, Jerome A., 2024. "The effect of prescription drug insurance on the incidence of potentially inappropriate prescribing: evidence from Medicare Part D," LSE Research Online Documents on Economics 121189, London School of Economics and Political Science, LSE Library.
    • Handle: RePEc:ehl:lserod:121189
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    File URL: http://eprints.lse.ac.uk/121189/
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    References listed on IDEAS

    as
    1. Jeffrey Diebold, 2018. "The Effects of Medicare Part D on Health Outcomes of Newly Covered Medicare Beneficiaries," The Journals of Gerontology: Series B, The Gerontological Society of America, vol. 73(5), pages 890-900.
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    2. Donghoon Lee & SangJune Kim & Jerome A. Dugan, 2024. "The effect of prescription drug insurance on the incidence of potentially inappropriate prescribing: Evidence from Medicare Part D," Health Economics, John Wiley & Sons, Ltd., vol. 33(1), pages 137-152, January.

    More about this item

    Keywords

    Medicare Part D; polypharmacy; potentially inappropriate prescribing;
    All these keywords.

    JEL classification:

    • I10 - Health, Education, and Welfare - - Health - - - General
    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health

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