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  • Keaven Anderson. Author.

  • Yilong Zhang. Author.

  • Yujie Zhao. Author, maintainer.

  • Jianxiao Yang. Author.

  • Nan Xiao. Author.

  • Amin Shirazi. Contributor.

  • Ruixue Wang. Contributor.

  • Yi Cui. Contributor.

  • Ping Yang. Contributor.

  • Xin Tong Li. Contributor.

  • Chenxiang Li. Contributor.

  • Hiroaki Fukuda. Contributor.

  • Hongtao Zhang. Contributor.

  • Yalin Zhu. Contributor.

  • John Blischak. Contributor.

  • Dickson Wanjau. Contributor.

  • Merck & Co., Inc., Rahway, NJ, USA and its affiliates. Copyright holder.



Anderson K, Zhang Y, Zhao Y, Yang J, Xiao N (2024). gsDesign2: Group Sequential Design with Non-Constant Effect. R package version,,

  title = {gsDesign2: Group Sequential Design with Non-Constant Effect},
  author = {Keaven Anderson and Yilong Zhang and Yujie Zhao and Jianxiao Yang and Nan Xiao},
  year = {2024},
  note = {R package version,},
  url = {},