difference in difference How does the parallel trends assumption
When Is Parallel Trends Sensitive To Functional Form. Web our first main result characterizes when the parallel trends assumption is invariant to transformations. We prove that the parallel.
We prove that the parallel. Web our first main result characterizes when the parallel trends assumption is invariant to transformations.
Web our first main result characterizes when the parallel trends assumption is invariant to transformations. We prove that the parallel. Web our first main result characterizes when the parallel trends assumption is invariant to transformations.
