3 papers
econ.EM2025
Beyond Parallel Trends: An Identification-Strategy-Robust Approach to Causal Inference with Panel Data
Brantly Callaway, Derek Dyal, Pedro H. C. Sant'Anna +1
In this paper, we propose a new approach to causal inference with panel data. Instead of using panel data to adjust for differences in the distribution of unobserved heterogeneity…
econ.EM2025
Difference-in-Differences Designs: A Practitioner's Guide
Andrew Baker, Brantly Callaway, Scott Cunningham +2
Difference-in-differences (DiD) is arguably the most popular quasi-experimental research design. Its canonical form, with two groups and two periods, is well-understood. However, e…
econ.EM2018
Difference-in-Differences with Multiple Time Periods
Brantly Callaway, Pedro H. C. Sant'Anna
In this article, we consider identification, estimation, and inference procedures for treatment effect parameters using Difference-in-Differences (DiD) with (i) multiple time perio…