A systematic review of cost-sharing strategies used within publicly-funded drug plans in member countries of the organisation for economic co-operation and development

Lianne Barnieh, Fiona Clement, Anthony Harris, Marja Blom, Cam Donaldson, Scott Klarenbach, Don Husereau, Diane Lorenzetti, Braden Manns

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Publicly-funded drug plans vary in strategies used and policies employed to reduce continually increasing pharmaceutical expenditures. We systematically reviewed the utilization of cost-sharing strategies and physician-directed prescribing regulations in publicly-funded formularies within member nations of the Organization of Economic Cooperation and Development (OECD). Methods & Findings: Using the OECD nations as the sampling frame, a search for cost-sharing strategies and physician-directed prescribing regulations was done using published and grey literature. Collected data was verified by a system expert within the prescription drug insurance plan in each country, to ensure the accuracy of key data elements across plans. Significant variation in the use of cost-sharing mechanisms was seen. Copayments were the most commonly used cost-containment measure, though their use and amount varied for those with certain conditions, most often chronic diseases (in 17 countries), and by socio-economic status (either income or employment status), or with age (in 15 countries). Caps and deductibles were only used by five systems. Drug cost-containment strategies targeting physicians were also identified in 24 countries, including guideline-based prescribing, prescription monitoring and incentive structures. Conclusions: There was variable use of cost-containment strategies to limit pharmaceutical expenditures in publicly funded formularies within OECD countries. Further research is needed to determine the best approach to constrain costs while maintaining access to pharmaceutical drugs. © 2014 Barnieh et al.
Original languageEnglish
Pages (from-to)e90434
JournalPLOS ONE
Volume9
Issue number3
DOIs
Publication statusPublished - 11 Mar 2014

Keywords

  • drug plans
  • cost-sharing
  • public funds
  • health economics

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