Panel data OLS regression how to create dummies for sub periods?

[francesca custoax]

Hi, I am currently working on my Master's thesis. I have some troubles regarding how to create dummies for sub periods. My data set consists on three Chinese provinces from 1997 to 2006. I am interested to see how the determinants of FDI change from the years that precede China's accession to WTO (before 2001) and after. Any suggestion?

[Carlo Lazzaro]

Francesca:
welcome to the list.
Your query is not that clear (please, read the FAQ, especially about how to post more effectively. Thanks).
That said, to create the predictor you're interested in, you can try:

gen WTO=0 if year<2000
replace WTO=1 if year>=2001
label define WTO 0 "before_WTO" 1 "after_WTO"
label val WTO WTO

For more on creating categorical variables and interactions, I point you out to -help fvvarlist-.

[francesca custoax]

Thank you so much, it is actually everything I need to know!

Regards,
Francesca