To cite package ‘twoCoprimary’ in publications use:

Homma G (2026). twoCoprimary: Sample Size and Power Calculation for Two Co-Primary Endpoints. R package version 1.0.0, https://github.com/gosukehommaex/twocoprimary.

Corresponding BibTeX entry:

  @Manual{,
    title = {twoCoprimary: Sample Size and Power Calculation for Two
      Co-Primary Endpoints},
    author = {Gosuke Homma},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://github.com/gosukehommaex/twocoprimary},
  }