Granlund David, Koksal-Ayhan Miyase Yesim
HUI Research, SE-103 29, Stockholm, Sweden.
Department of Economics, Umeå University, SE-901 87, Umeå, Sweden.
Eur J Health Econ. 2015 Dec;16(9):969-83. doi: 10.1007/s10198-014-0646-9. Epub 2014 Nov 18.
What has been the effect of competition from parallel imports on prices of locally sourced on-patent drugs? Did the 2002 Swedish mandatory substitution reform increase this competition? To answer these questions, we carried out difference-in-differences estimation on monthly data for a panel of all locally sourced on-patent prescription drugs sold in Sweden during the 40 months from January 2001 to April 2004. On average, facing competition from parallel imports caused a 15-17% fall in price. While the reform increased the effect of competition from parallel imports, it was only by 0.9%. The reform, however, did increase the effect of therapeutic competition by 1.6%.
平行进口带来的竞争对本地采购的专利药品价格产生了怎样的影响？2002年瑞典的强制替代改革是否加剧了这种竞争？为回答这些问题，我们对2001年1月至2004年4月这40个月内在瑞典销售的所有本地采购专利处方药面板的月度数据进行了双重差分估计。平均而言，面临平行进口的竞争导致价格下降了15%至17%。虽然改革增强了平行进口带来的竞争效应，但增幅仅为0.9%。不过，改革确实使治疗性竞争的效应提高了1.6%。
