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# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "DRDID" in publications use:'
type: software
license: GPL-3.0-only
title: 'DRDID: Doubly Robust Difference-in-Differences Estimators'
version: 1.2.0
identifiers:
- type: doi
  value: 10.32614/CRAN.package.DRDID
abstract: Implements the locally efficient doubly robust difference-in-differences
  (DiD) estimators for the average treatment effect proposed by Sant'Anna and Zhao
  (2020) <https://doi.org/10.1016/j.jeconom.2020.06.003>. The estimator combines inverse
  probability weighting and outcome regression estimators (also implemented in the
  package) to form estimators with more attractive statistical properties. Two different
  estimation methods can be used to estimate the nuisance functions.
authors:
- family-names: Sant'Anna
  given-names: Pedro H. C.
  email: pedrosantanna@causal-solutions.com
- family-names: Zhao
  given-names: Jun
  email: beanzhaojun11@gmail.com
preferred-citation:
  type: article
  title: Doubly Robust Difference-in-Differences Estimators
  authors:
  - family-names: Sant'Anna
    given-names: Pedro H. C.
    email: pedrosantanna@causal-solutions.com
  - family-names: Zhao
    given-names: Jun
    email: beanzhaojun11@gmail.com
  journal: Journal of Econometrics
  year: '2020'
  volume: '219'
  url: https://doi.org/10.1016/j.jeconom.2020.06.003
  start: 101-122
repository: https://CRAN.R-project.org/package=DRDID
repository-code: https://github.com/pedrohcgs/DRDID
url: https://psantanna.com/DRDID/
date-released: '2025-10-07'
contact:
- family-names: Sant'Anna
  given-names: Pedro H. C.
  email: pedrosantanna@causal-solutions.com