Difference in Differences Estimation in Stata

An introduction to implementing difference in differences regressions in Stata.

[wm]

Thank you so much for this! My concern is why didn't you run a complete regression model for house price? Why only a bivariate regression? (i.e., dependent and dummies).

[d.gondwe]

This video formed the backbone of my masters degree dissertation some 5 years ago. And guess what! I got the honourable mention for best thesis award! Eternally grateful

[tdogz]

I watched the video 2 years ago, it helped me understand the DID model and Stata so that I could finish my graduation dissertation on time. After the graduation, I published another paper using the same model, thank you

[dargon]

I learnt more in this video than six 2-hour videos of my own uni's lectures

[davecullins]

You saved my exam in the previous semester, and you're saving me in this semester as well!

[jonaFUN]

I’m from Andover, England and I approve this video 👍

[dandellionsy]

Thank you so much, I need it. My model might be more complicated but at least I can sense the idea of doing it. Awesome! Keep sharing more

[sylvieyin]

Thank you so much. This video makes my HW much easier.

[huangkiana]

THIS VIDEO SAVED ME FROM MY DEADLINE. THANK YOU SO MUCH *cry

[simonazambelli]

Thank you very much. You explained everything very clearly! Thanks

[timothyowuor]

Nice tutorial on DID, thanks for saving me

[VINAYKUMAR-kfkd]

Thanks for the detailed Info. what if my Dependent variable is Categorical like Anemia (Yes / No). What should i need to take B coefficient or Exp(B)?? And how to cross check in excel ?

[YY-tyfx]

What a clear explanation! I'm working on my own DD regression, and it really helped. Does the dependent variable 'price' cover prices before & after the treatment here, right?

[samknight]

Hi Sebastian, thank you very much for the video. Just wondering why you did not regress the other independent variables?

[vbdohhv]

Thanks, Very well explained.
Can I get this dummy data set or can you please guide from where I can get such dummy data set for educational / learning purpose only ?

[sajidnoor]

Thank you very much for explaining this very clearly.

[myleswhitmore]

Hi SebastianWaiEcon, I am a student at Morehouse College, and I really enjoyed watching your video. I need help running a Diff in Diff regression for my research paper. For context, I am using Stata to analyze NAFTA's impact on GDP and trade flow for its member nations. To facilitate this process, I will be running an individual diff and diff analysis for each country. My dummy variable will be years before 1994 (when NAFTA was signed) and after 1994. My DV will be GDP growth. And my extra variables will be looking at human capital, agriculture industry growth percentage, manufacturing growth percentage, and other variables. However, I struggle with the Stata platform and would like your advice to ensure this regression runs smoothly.

[keith-ole]

Phenomenal explanation, thank you.
If you wanted to include more prior years and a few years after, would you have to make a dummy variable for each year?

[ssjvegetoever]

Hi Sebastian, thanks a lot for the clean explanation! Could you tell me why you were inlcuding post-treatment levels of your covariates? Aren't they endogenous and thus result into bias? Thanks in advance!

[nathanmasak]

That's really helpful. Thank you. Did you ever run the "event study" model? I can't find resources on this model? Your input would be appreciated.