It shows that the standard way many estimate DDD is wrong.
It shows why and gives you tools that work with covariates and staggered adoption.
Bonus: free R package.
arxiv.org/abs/2505.09942
It shows that the standard way many estimate DDD is wrong.
It shows why and gives you tools that work with covariates and staggered adoption.
Bonus: free R package.
arxiv.org/abs/2505.09942