Discussion on "Instrumented difference-in-differences" by Ting Ye, Ashkan Ertefaie, James Flory, Sean Hennessy, and Dylan S. Small.

Autor: Beyhum J; ORSTAT, KU Leuven, Leuven, Belgium., Florens JP; Toulouse School of Economics, Université Toulouse Capitole, Toulouse, France., Van Keilegom I; ORSTAT, KU Leuven, Leuven, Belgium.
Jazyk: angličtina
Zdroj: Biometrics [Biometrics] 2023 Jun; Vol. 79 (2), pp. 582-586. Date of Electronic Publication: 2022 Nov 11.
DOI: 10.1111/biom.13779
Abstrakt: We discuss Ye et al. 2022, which combines instrumental variables methods with difference in differences. First, we compare the paper to other works in the difference in differences literatures and argue that the main contribution lies in the multiply robust estimation approach. Then, we reformulate the causal assumptions in Ye et al. 2022 in the usual theoretical framework of the instrumental variables literature. This clarifies in which sense the difference in differences design can weaken the standard instrumental variable conditions.
(© 2022 The International Biometric Society.)
Databáze: MEDLINE
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