DiD Reading Group Meeting #2 from May 7, 2021 (https://taylorjwright.github.io/did-reading-group/).
Jonathan Roth presents a combination of his papers "Pre-test with Caution: Event-study Estimates After Testing for Parallel Trends" (https://jonathandroth.github.io/assets/files/roth_pretrends_testing.pdf) and "An Honest Approach to Parallel Trends” with Ashesh Rambachan (https://jonathandroth.github.io/assets/files/HonestParallelTrends_Main.pdf).
Slides can be found here: https://www.dropbox.com/s/dj9is94cxmby5rp/slides_Ottawa_reading_group_20210507.pdf?dl=0
Example code using HonestDiD in R: