alexa Comparison of prescription drug costs in the United States and the United Kingdom, Part 1: statins.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Jick H, Wilson A, Wiggins P, Chamberlin DP

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Abstract STUDY OBJECTIVE: To compare the annual cost of statins in the United States and in the United Kingdom. DESIGN: Matched-cohort cost analysis. DATA SOURCES: U.K. General Practice Research Database (GPRD), and MarketScan Commercial Claims and Encounters Database, a large, U.S. self-insured medical claims database. STUDY POPULATION: We initially identified 1.6 million people in the GPRD who were younger than 65 years of age in 2005. These people were then matched by year of birth and sex with 1.6 million people in the U.S. database. From this matched pool, we estimated that 280,000 people aged 55-64 years from each country in 2005 were prescribed at least one drug. Of these, 91,474 (33\%) in the U.S. were prescribed a statin compared with 68,217 (24\%) in the U.K. After excluding those who did not receive statins continuously or who switched statins during the year, there remained 61,470 in the U.S. and 45,788 in the U.K. who were prescribed a single statin preparation continuously during 2005 (annual statin users). We estimated and compared drug costs (presented in 2005 U.S. dollars) separately in the two countries. MEASUREMENTS AND MAIN RESULTS: Estimated drug costs were determined by random sampling. Estimated annual costs/patient in the U.S. ranged from $313 for generic lovastatin to $1428 for nongeneric simvastatin. In the U.K., annual costs/patient ranged from $164 for generic simvastatin to $509 for nongeneric atorvastatin. The total annual cost of the continuous receipt of statins in the U.S. was $64.9 million compared with $15.7 million in the U.K. In June 2006, after our study results were analyzed, the U.S. Food and Drug Administration approved generic simvastatin. We thus derived cost estimates for simvastatin use during 2006 and found that more than 60\% of simvastatin users switched to the generic product, which reduced the cost/pill by more than 50\%. CONCLUSION: The cost paid for statins in the U.S. for people younger than 65 years, who were insured by private companies, was approximately 400\% higher than comparable costs paid by the government in the U.K. Available generic statins were substantially less expensive than those that were still under patent in both countries. © 2012, Pharmacotherapy Publications, Inc. This article was published in Pharmacotherapy and referenced in Journal of Addiction Research & Therapy

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