phdid implements the methods of Arora and Wagle (2026). Please cite both the Ashoka University discussion paper and the SSRN working paper, and the software as well if the implementation itself matters to your work.

Arora, Parush and Rohan Wagle (2026). A Bayesian Approach to Partial Homogeneity in Staggered Difference-in-Difference. Ashoka University Economics Discussion Paper 166. https://www.ashoka.edu.in/research/a-bayesian-approach-to-partial-homogeneity-in-staggered-difference-in-difference/

Arora, Parush and Rohan Wagle (2026). A Bayesian Approach to Partial Homogeneity in Staggered Difference-in-Difference (March 01, 2026). Available at SSRN: https://ssrn.com/abstract=7207083 or<doi:10.2139/ssrn.7207083>

Wagle, Rohan and Parush Arora (2026). phdid: Partial Homogeneity in Staggered Difference-in-Differences. R package version 0.1.0. https://github.com/ronwag2005/phdid

Corresponding BibTeX entries:

  @TechReport{arora-wagle-2026-dp,
    title = {A Bayesian Approach to Partial Homogeneity in Staggered
      Difference-in-Difference},
    author = {Parush Arora and Rohan Wagle},
    year = {2026},
    month = {jul},
    institution = {Ashoka University},
    type = {Economics Discussion Paper},
    number = {166},
    url =
      {https://www.ashoka.edu.in/research/a-bayesian-approach-to-partial-homogeneity-in-staggered-difference-in-difference/},
  }

  @TechReport{arora-wagle-2026-ssrn,
    title = {A Bayesian Approach to Partial Homogeneity in Staggered
      Difference-in-Difference},
    author = {Parush Arora and Rohan Wagle},
    year = {2026},
    month = {mar},
    institution = {Social Science Research Network},
    type = {SSRN Working Paper},
    number = {7207083},
    doi = {10.2139/ssrn.7207083},
    url = {https://ssrn.com/abstract=7207083},
  }

  @Manual{phdid-package,
    title = {phdid: Partial Homogeneity in Staggered
      Difference-in-Differences},
    author = {Rohan Wagle and Parush Arora},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://github.com/ronwag2005/phdid},
  }