To cite package ‘swdpwr’ in publications use:

Chen J, Zhou X, Li F, Spiegelman. D (2026). swdpwr: Power Calculation for Stepped Wedge Cluster Randomized Trials. R package version 1.12, https://CRAN.R-project.org/package=swdpwr.

Corresponding BibTeX entry:

  @Manual{,
    title = {swdpwr: Power Calculation for Stepped Wedge Cluster
      Randomized Trials},
    author = {Jiachen Chen and Xin Zhou and Fan Li and Donna
      Spiegelman.},
    year = {2026},
    note = {R package version 1.12},
    url = {https://CRAN.R-project.org/package=swdpwr},
  }