@article{SchuhmacherWilischKussetal.2021,
  author    = {Schuhmacher, Alexander and Wilisch, Lucas and Kuss, Michael and Kandelbauer, Andreas and Hinder, Markus and Gassmann, Oliver},
  title     = {R\&D efficiency of leading pharmaceutical companies : a 20-year analysis},
  journal   = {Drug discovery today},
  volume    = {26},
  number    = {8},
  issn      = {1359-6446},
  doi       = {10.1016/j.drudis.2021.05.005},
  institution = {Life Sciences},
  pages     = {1784 -- 1789},
  year      = {2021},
  abstract  = {Comparative analysis of the R\&D efficiency of 14 leading pharmaceutical companies for the years 1999-2018 shows that there is a close positive correlation between R\&D spending and the two investigated R\&D output parameters, approved NMEs and the cumulative impact factor of their publications. In other words, higher R\&D investments (input) were associated with higher R\&D output. Second, our analyses indicate that there are "economies of scale" (size) in pharmaceutical R\&D.},
  language  = {en}
}