3 papers
econ.EM2026
Difference-in-Differences Models in the Presence of Time-Varying Mediators
Kyunghoon Ban, Zhengrun Chen, Désiré Kédagni
We study difference-in-differences (DiD) designs in which a binary treatment changes an endogenous time-varying (continuous, discrete, or mixed) mediator that in turn affects an ou…
econ.EM2024
and : Stata commands for robust difference-in-differences
Kyunghoon Ban, Désiré Kédagni
This article provides a Stata package for the implementation of the robust difference-in-differences (RDID) method developed in Ban and Kédagni (2023). It contains three main comma…
econ.EM2021
Nonparametric Bounds on Treatment Effects with Imperfect Instruments
Kyunghoon Ban, Désiré Kédagni
This paper extends the identification results in Nevo and Rosen (2012) to nonparametric models. We derive nonparametric bounds on the average treatment effect when an imperfect ins…