Measures of research and development productivity for the pharmaceutical industry using the two-stage data envelopment method
Abstract
論文の内容の要旨 論文題目 Measures of research and development productivity for the pharmaceutical industry using the two-stage data envelopment method (2 段階データ包絡法による、製薬産業の研究開発生産性の測定) 氏名 志村 裕久 Analysis of research and development (R&D) productivity of the pharmaceutical industry has increased.A pharmaceutical company needs to improve R&D productivity to sustain earnings and some papers argue the decline of R&D productivity is a cause of mergers and acquisitions (M&A).However, a conventional method for measuring R&D productivity on an individual basis is based on R&D efficiency, i.e., a ratio of R&D spending to number of successful new molecular entities (NMEs), and there are limitations to examining relationships between R&D productivity and industry consolidation.Few methods incorporate the nature of the pharmaceutical industry, including differences in therapeutic category risk profiles, and measure R&D productivity on an individual company basis.The goal of this dissertation is to develop a novel method to measure R&D productivity of an individual pharmaceutical company incorporating industry characteristics.Based on these outcomes, relationships between R&D productivity and industry consolidation and between R&D productivity and therapeutic categories are investigated.Out of 24 publicly listed Japanese companies since 1980, 15 are selected using one input variable (actual R&D spending) and three output variables (accumulated number of weighted NMEs, sales, and operating profit).The…
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