Regression modelQuasi-experimental / causal inference

Heterogeneous Treatment Effect Difference-in-Differences (HTE-DiD)

HTE-DiD extends the classic Difference-in-Differences estimator to settings where treatment effects vary across units, time periods, or treatment cohorts. Developed formally by Callaway and Sant'Anna (2021) and Sun and Abraham (2021), it avoids the biases that arise when a conventional two-way fixed-effects regression is used with staggered adoption or effect heterogeneity, by estimating cohort-and-time-specific average treatment effects that can then be aggregated flexibly.

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Sources

  1. Callaway, B., & Sant'Anna, P. H. C. (2021). Difference-in-Differences with multiple time periods. Journal of Econometrics, 225(2), 200-230. DOI: 10.1016/j.jeconom.2020.12.001
  2. Sun, L., & Abraham, S. (2021). Estimating dynamic treatment effects in event studies with heterogeneous treatment effects. Journal of Econometrics, 225(2), 175-199. DOI: 10.1016/j.jeconom.2020.09.006

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Referenced by

ScholarGateHeterogeneous Treatment Effect Difference-in-Differences (Heterogeneous Treatment Effect Difference-in-Differences Estimator). Retrieved 2026-06-04 from https://scholargate.app/tr/causal-inference/heterogeneous-treatment-effect-difference-in-differences