Difference in Difference model in Stata

[Eric Ding]

Hi all smart folks!

I am trying to replicate a figure from the code I got from the authors of a paper.

I want to use didregress function in Stata to replicate the table. However, I could not figure it out. Could someone help? Thanks!

The original code is below:

*TABLE 2 -- D-in-D;
sum logrealsales if cc==1 & year<2000
sum logrealsales if cc==1 & year>1999
sum logrealsales if lc==1 & year<2000
sum logrealsales if lc==1 & year>1999
gen did=0
replace did=1 if cc==1 & year>1999
gen tafter=0
replace tafter=1 if year>1999
regress logrealsales cc tafter did
drop tafter did

[Jared Greathouse]

However, I could not figure it out

Neither can I, and my masters thesis and current doctoral coursework specifically studies/uses difference-in-differences, synthetic controls and related methods.

Not because I can't or won't help, it's just that there's nothing to go off of here. You don't even provide a screenshot of a table or anything that would reflect what you want. Also, didreg is a command, not a function.

I don't mind helping at all, but please, see FAQ section 10 and 12 and re-ask your question below.

[Eric Ding]

Neither can I, and my masters thesis and current doctoral coursework specifically studies/uses difference-in-differences, synthetic controls and related methods.

Not because I can't or won't help, it's just that there's nothing to go off of here. You don't even provide a screenshot of a table or anything that would reflect what you want. Also, didreg is a command, not a function.

I don't mind helping at all, but please, see FAQ section 10 and 12 and re-ask your question below.

Hi Jared,

Thanks for your replying, I have included the table and reposted it. Thanks for your advice!

[Jared Greathouse]

I don't see a table (I'm on my phone, if that matters), and either way I still need your data and code to be of use here. So, please show me your data using dataex.