Do-Files and examples from the book Felix Bittmann, Fleix, 2019, Stata: A Really Short Introduction.
花一点时间学习一下 Markdown。 从此，你会爱上码字写文章，开启随心所欲的书写历程。
Stata & R code for course on the fundamentals of data analysis and visualization
Two-Stage Difference-in-Differences following Gardner (2021)
Keeping track of what is going on with the latest DiD innovations. DID-倍分法的最新进展，包括文献和代码。
数据和代码
