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. Author manuscript; available in PMC: 2018 Feb 17.
Published in final edited form as: N Engl J Med. 2017 Aug 17;377(7):658–665. doi: 10.1056/NEJMsa1700087

Figure 2. Monthly Drug Prices and Copayments per Prescription (2010–2014).

Figure 2

Shown are the dollar amounts of the average price of drugs and copayments by patients per prescription before and after the implementation of reference pricing. After a slight decrease in the average drug price in 2012 because of patent expirations for several major drugs, average prices then dropped substantially lower for the RETA Trust than for the union trust after implementation of reference pricing. During the same period, the average copayment per prescription was stable for 2 years and then increased for RETA Trust employees.