Empirical studies on drug pricing system in Japan

2018 Fiscal Year Final Research Report

• Project/Area Number: 16K21514
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Economic policy; Public finance/Public economy
• Research Institution: Setsunan University
• Principal Investigator: Nishikawa Kohei 摂南大学, 経済学部, 准教授 (60463204)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: 薬価制度 / 価格規制 / 降圧剤 / 普及

Outline of Final Research Achievements

In this research, I examined the effect of repricing policy for market expansion in the pharmaceutical industry using a data set based on the receipt for health insurance claim. First, I estimated the demand function for antihypertensive and analyzed the role of the price and of other attributes in diffusion. Second, by conducting simulations based on the estimation result of demand function, I clarified changes in market share and sales amount of pharmaceutical designated the repricing policy.

Free Research Field

産業組織

Academic Significance and Societal Importance of the Research Achievements

市場拡大再算定は、ライフイノベーションの推進に対して負の影響を及ぼすとの指摘があるが、我が国独自の制度ということもあり、その影響をエビデンスに基づき評価する研究はなかった。本研究は、医薬品のシェア、売上高に着目することで、市場拡大再算定の市場への影響を定量的に評価する初の試みである。