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Assessment of the Price–Volume Agreement Program in South Korea

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  • Han, Euna
  • Park, Sun-Young
  • Lee, Eui-Kyung

Abstract

The Price–Volume Agreement Program (PVAP) was promulgated in 2007 in South Korea as the first attempt to adjust drug pricing according to total consumption in order to contain drug expenditure. This study was designed to assess the impact of the PVAP on diabetes drug expenditure for a period of a 10-year period (2003–2012) using claims data from the National Health Insurance Service. We estimated a multilevel mixed-effects linear regression model by comparing the level of total monthly diabetes drug expenditure for drugs subject to PVAP and existing drugs after adjusting the average differences in drug expenditure before and after the PVAP. The monthly total expenditure for drugs that were newly listed through the PVAP (negotiation drugs) was 7.03% higher on average compared to that for existing drugs, controlling for the baseline differences in expenditure before and after the PVAP. This increase was observed in all four subgroups of diabetes drugs, including sitagliptin, vildagliptin, exenatide, and others. The growth rate of total diabetes drug expenditure was reduced after the PVAP despite the sustained escalation of expenditure levels, which may imply that the PVAP has the potential to be an effective tool for drug expenditure control in the long term.

Suggested Citation

  • Han, Euna & Park, Sun-Young & Lee, Eui-Kyung, 2016. "Assessment of the Price–Volume Agreement Program in South Korea," Health Policy, Elsevier, vol. 120(10), pages 1209-1215.
    • Handle: RePEc:eee:hepoli:v:120:y:2016:i:10:p:1209-1215
    DOI: 10.1016/j.healthpol.2016.07.017
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    References listed on IDEAS

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    1. Andersson, Karolina & Petzold, Max Gustav & Sonesson, Christian & Lonnroth, Knut & Carlsten, Anders, 2006. "Do policy changes in the pharmaceutical reimbursement schedule affect drug expenditures?: Interrupted time series analysis of cost, volume and cost per volume trends in Sweden 1986-2002," Health Policy, Elsevier, vol. 79(2-3), pages 231-243, December.
    2. Carone, Giuseppe & Schwierz, Christoph & Xavier, Ana, 2012. "Cost-containment policies in public pharmaceutical spending in the EU," MPRA Paper 42008, University Library of Munich, Germany.
    3. Hui Zhang & Gregory Zaric, 2015. "Using price–volume agreements to manage pharmaceutical leakage and off-label promotion," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 16(7), pages 747-761, September.
    4. Park, Sun-Young & Han, Euna & Kim, Jini & Lee, Eui-Kyung, 2016. "Factors influencing the difference between forecasted and actual drug sales volumes under the price–volume agreement in South Korea," Health Policy, Elsevier, vol. 120(8), pages 867-874.
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