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A Study on the Determinant Factors of Market Share in Japanese Pharmaceutical Market

Research Project

Project/Area Number 26380377
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Public finance/Public economy
Research InstitutionHosei University

Principal Investigator

SUGAHARA Takuma  法政大学, 経済学部, 教授 (50364659)

Co-Investigator(Kenkyū-buntansha) 南部 鶴彦  学習院大学, 経済学部, 名誉教授 (00061416)
Research Collaborator ISHIKAWA Takayuki  
HORIE Tetsushi  
Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords医薬品市場 / 後発医薬品 / 市場シェア / 広告宣伝活動 / 政策効果 / スタチン / ジェネリック / スタチン剤 / 後発医薬品(ジェネリック医薬品) / 後発医薬品利用促進 / 広告宣伝 / 薬価 / パネルデータ
Outline of Final Research Achievements

We examined how advertising publicity activities, drug prices and generic promotion policies of government would affect generic market share by utilizing data sets covering 99% or more of the sales amount of drug transactions in Japan. The factors that contributed to the market share in the Statin market were "original product - relative price of generic product", "market growth rate", "generic drug promoting policy", both of which had a positive influence.
In addition, when examining the effect on the average change rate of the share of generic drugs with respect to business activities of the company, the visit of MR itself was not significant, but the E-advertisement on web browsing was significant. However, as e promotion was promoted by MR visit, it was suggested that MR visit might be an indirect factor of increasing generic share.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report

Research Products

(2 results)

All 2015 2014

All Journal Article (1 results) (of which Open Access: 1 results) Presentation (1 results)

  • [Journal Article] 後発医薬品の市場シェア決定要因と普及促進政策の効果-高脂血症薬「プラバスタチン」における後発医薬品参入の事例-2014

    • Author(s)
      菅原琢磨・南部鶴彦
    • Journal Title

      経済志林

      Volume: Vol.81 No2・3・4

    • Related Report
      2014 Research-status Report
    • Open Access
  • [Presentation] What Explains the Market Share Under Generic Competition? -The Effect of Good-will and a Policy Promoting Generics -2015

    • Author(s)
      Takuma SUGAHARA and Tsuruhiko NAMBU
    • Organizer
      11th iHEA World Congress in Milan, Italy
    • Place of Presentation
      Bocconi University in Milan , Italy.
    • Year and Date
      2015-07-12 – 2015-07-15
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2019-03-29  

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