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

Arora P, Wagle R (2026). “A Bayesian Approach to Partial Homogeneity in Staggered Difference-in-Difference.” SSRN Working Paper 7207083, Social Science Research Network. doi:10.2139/ssrn.7207083. https://ssrn.com/abstract=7207083.

Wagle R, Arora P (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},
  }