Pedro H. C. Sant'Anna (@pedrohcgs) profile picture

Pedro H. C. Sant'Anna

@pedrohcgs

Associate Professor @EmoryEconomics | Econometrics | Causal Inference | Difference-in-Differences. Dad 5x

 Atlanta, GA
psantanna.com
Joined June 2012
  • Tweets4.4K
  • Following2.5K
  • Followers28.8K
424Media
Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)Photo by Pedro H. C. Sant'Anna (@pedrohcgs)
We have some updates on our DDD paper. In our latest version, we have introduced three new applications and an open-source R package to facilitate the usage of all our DDD tools! 🚀R package: marcelortiz.com/triplediff/ 🔎Updated paper: arxiv.org/abs/2505.09942
Pedro H. C. Sant'Anna (@pedrohcgs) profile picturePedro H. C. Sant'Anna
@pedrohcgs16 May 2025
🚨New paper alert🚨 My paper with @marcelortizv on "Better Understanding Triple Differences Estimators" is finally out. 📰 psantanna.com/files/DDD_OVS.… Main msg: Nuances in DDD designs challenge the practice of generally viewing DDD as the diff btw two DiDs. We can do better! 1/
Image from Pedro H. C. Sant'Anna (@pedrohcgs)
10
71
1
360
63,336
Pedro H. C. Sant'Anna retweeted
Tymon Słoczyński (@TymonSloczynski) profile picture
Tymon Słoczyński@TymonSloczynski11h
Super excited to see this paper published in such a great venue!
The Review of Economic Studies (@RevEconStudies) profile pictureThe Review of Economic Studies@RevEconStudies17h
When covariates are required for IV validity, usual IV may be misspecified and yield negative weights; interacted IV is often preferable. New paper by @TymonSloczynski restud.com/when-should-we-no… #REStud #EconX #EconTwitter
Image from The Review of Economic Studies (@RevEconStudies)
6
11
71
2,523
Don't wait to apply!!! This will be great!! Summer School on Causal Inference in Greece! More info and application links: advecon.ac.uoi.gr/ Space is limited! Come hang out with @jmwooldridge, @causalinf, and me!
Image from Pedro H. C. Sant'Anna (@pedrohcgs)
2
25
2
112
8,090
Pedro H. C. Sant'Anna retweeted
Vincent Arel-Bundock (@VincentAB) profile picture
Vincent Arel-Bundock@VincentABOct 17
Looking for an overleaf alternative? Check out LibrePaper! It's a free writing platform for LaTeX, Typst, Markdown, and HTML. History, comments, track changes, AI, live preview, multi editors, chat, etc. Use the main server or self-host. Still very new, so I need feedback!
Image from Vincent Arel-Bundock (@VincentAB)
Boyd Kane (quantized) (@beyarkay) profile pictureBoyd Kane (quantized)@beyarkayOct 16
please someone vibecode an overleaf replacement
11
62
3
367
21,463
On my way to Vancouver to the Canadian Econometrics Study Group!! Looking forward to learning from you!
Image from Pedro H. C. Sant'Anna (@pedrohcgs)
2
55
2,116
When did this prompt suggestion in Codex start? I am finding it very useful!!
9
1
80
13,353
Pedro H. C. Sant'Anna retweeted
Tibo (@tibo_maker) profile picture
Tibo
@tibo_makerOct 14
AI was supposed to make us work less I've never been this tired in my life most days I have up to 10 agents running at the same time. one fixing a bug, one writing pages, one refactoring something I already forgot I asked for, 3 other I have no idea what they are doing but i suppose i ask it? and I jump from conversation to conversation all day compared to 5 years ago, I probably context switch 100x more by the end of the day my brain is fried. completely toasted. nothing left, not even for the people I love I call it the fried brain effect thought it was just me but almost every founder I talk to lately says the exact same thing we got superpowers, and somehow the pressure only went up. if you can ship 10x more, you feel like you have to ship 10x more. every single day I don't have a solution honestly I have no idea where this goes from here anyone else feeling this?
1,722
674
467
9,478
701,604
Pedro H. C. Sant'Anna retweeted
D. Yanagizawa-Drott (@YanagizawaD) profile picture
D. Yanagizawa-Drott
@YanagizawaDOct 14
Replying to @jt_kerwin @ash_craig @danielrock
… and the horror show is not that AI “solved DiD” Instead, NOT A SINGLE PAPER was deemed to be without errors:
Image from D. Yanagizawa-Drott (@YanagizawaD)
3
4
2
31
6,467
Pedro H. C. Sant'Anna retweeted
Jeffrey Wooldridge (@jmwooldridge) profile picture
Jeffrey Wooldridge@jmwooldridgeOct 13
One of my colleagues evidently got ahold of a photo of current and former students and me at the Midwest Econometrics Group Meeting at U of Cincinnati. This was on my office door. The same colleague who microwaves fish? (No, I wasn’t actually wearing a crown.)
Image from Jeffrey Wooldridge (@jmwooldridge)
1
2
53
4,793
This has been in the making for a while, and I think it is time to give a preview. csdid in Stata is now fully updated! This version is faster, better documented, and fully aligned with our R and Python packages! psantanna.com/csdid/ We'll keep further improving.
Image from Pedro H. C. Sant'Anna (@pedrohcgs)
3
51
1
321
12,634
Oh, and we are breaking many defaults in this version!! So you will want to check the documentation! We also deprecated some options!
2
382
These updates were only possible thanks to many people! Fernando Rios-Avila, @MinhaHwang, and Juwon Hong were fundamental to this.
1
3
330
I hope this is useful. We are committed to improving the package. We also want to keep clarifying the importance of heterogeneity and of understanding what your estimator actually estimates under clearly stated conditions. We need to keep talking about estimands!
1
4
318
This will be so much fun!!! Please apply!! And see you in Preveza!
Sofia Tsarsitalidou (@SofiaTsarsi) profile pictureSofia Tsarsitalidou
@SofiaTsarsiOct 8
7th Summer School in Advanced Economics Causal Inference: A Practical and Modern Approach With @causalinf, @pedrohcgs & @jmwooldridge . 📍 Preveza, Greece Apply here 👇 app.oxfordabstracts.com/stag…… More info advecon.ac.uoi.gr
Image from Sofia Tsarsitalidou (@SofiaTsarsi)
4
3
99
5,049
Pedro H. C. Sant'Anna retweeted
Sofia Tsarsitalidou (@SofiaTsarsi) profile picture
Sofia Tsarsitalidou
@SofiaTsarsiOct 8
7th Summer School in Advanced Economics Causal Inference: A Practical and Modern Approach With @causalinf, @pedrohcgs & @jmwooldridge . 📍 Preveza, Greece Apply here 👇 app.oxfordabstracts.com/stag…… More info advecon.ac.uoi.gr
Image from Sofia Tsarsitalidou (@SofiaTsarsi)
11
51
11
278
26,609
Pedro H. C. Sant'Anna retweeted
Vox.LACEA (@voxlacea) profile picture
Vox.LACEA@voxlaceaOct 6
🎉 LACEA and the Amartya Sen Economics Prize Foundation are pleased to announce Pablo Fajgelbaum as the inaugural recipient of the Amartya Sen Economics Prize. The inaugural call received more than 100 nominations from around the world.
Image from Vox.LACEA (@voxlacea)
11
42
12
263
41,846
Pedro H. C. Sant'Anna retweeted
Soumitra Shukla (@soumitrashukla9) profile picture
Soumitra Shukla
@soumitrashukla9Oct 6
Alex Imas told me directly that his Twitter/X account has been hacked. Please don’t click links or respond to DMs from his account until he regains access. @Support, can you help? If anyone has a contact at X, please let me know. Please share.
19
36
4
98
35,644
Pedro H. C. Sant'Anna retweeted
Tibo (@thsottiaux) profile picture
Tibo
@thsottiauxOct 4
Over the next 28 days, each day we’ll either ship one thing that is a clear improvement and relevant for most codex/work users or ship a full reset. Let the improvements begin.
Tibo (@thsottiaux) profile pictureTibo
@thsottiauxOct 4
All right, we’re locking in. Only things being worked on are simplifications, more efficiency for more usage, groundbreaking features or new models. Sometimes you have to invest ahead of the curve, but feedback is clear that you all want things to get simpler. On it.
4,494
1,494
2,367
26,322
8,250,277
Load more