Python package to read sas, spss and stata files into pandas data frames. It is a wrapper for the C library readstat.
Statsmodels: statistical modeling and econometrics in Python
-appendfiles.ado- Stata 新命令 以 `appendfile` 为基础，但该命令只能一次性合并两个文件。而 `appendfiles` 则可以一次性合并多个文本文件。
Difference in Differences with Multiple Periods and Variation in Treatment Timing
简书文章[『君生我未生！Stata - 论文四表一键出』](http://www.jianshu.com/p/97c4f291ee1e) 文中使用的 Do-file 和原始 Markdown 文档。
A Stata package that acts as a wrapper for Callaway and Sant'anna's R did package
Difference in Differences with Multiple Periods and Variation in Treatment Timing
Do-Files and examples from the book Felix Bittmann, Fleix, 2019, Stata: A Really Short Introduction.
Bruce E. Hansen's Threshold Panel Model 面板门槛模型的程序和代码
