Posts
Informal Posts on Coding / Econometrics / Etc.
October 2026 · Under unconfoundedness, comparing treated and untreated units with the same covariates and reweighting the two groups to have the same distribution of covariates are two ways of doing the same thing.
November 2024 · How to interpret \(\alpha\) in the regression \(Y_i = \alpha D_i + X_i'\beta + e_i\) under unconfoundedness and if there is treatment effect heterogeneity.
May 2023 · Explains the TWFE regression weighting scheme in DID applications in a simplified setting with staggered treatment adoption.
November 2021 · Comparing varying and universal base periods in event studies.
June 2021 · A short post on the computation speed of the
did R package.Short Research Summaries
March 2023 · Short summary of my DID chapter in the Handbook of Labor, Human Resources and Population Economics.