To cite PICOTsize in publications, please cite the software itself and, where relevant, the underlying sample size methodology paper:

Rashidi Pour A (2026). PICOTsize: PICOT-based sample size calculation for epidemiological study designs. R package, https://github.com/AtefehRashidi/PICOTsize.

Bhardwaj R, Agrawal U, Vashist P, Manna S (2024). “Determination of sample size for various study designs in medical research: A practical primer.” Journal of Family Medicine and Primary Care, 13, 2555–2561. doi:10.4103/jfmpc.jfmpc_1675_23.

Corresponding BibTeX entries:

  @Manual{,
    title = {PICOTsize: PICOT-based sample size calculation for
      epidemiological study designs},
    author = {Atefeh {Rashidi Pour}},
    year = {2026},
    note = {R package},
    url = {https://github.com/AtefehRashidi/PICOTsize},
  }

  @Article{,
    title = {Determination of sample size for various study designs in
      medical research: A practical primer},
    author = {Reena Bhardwaj and Usha Agrawal and Praveen Vashist and
      Souvik Manna},
    journal = {Journal of Family Medicine and Primary Care},
    year = {2024},
    volume = {13},
    pages = {2555--2561},
    doi = {10.4103/jfmpc.jfmpc_1675_23},
  }