Dan Zeltzer

@danzeltzer

Health Economist @UCBerkeley Public Health. Studying digital health - telemedicine, AI. IV hobbyist. Ex-Tel Aviv U Econ. Princeton Econ PhD

Berkeley CA danzeltzer.com Joined October 2013

454 Following 732 Followers 481 Posts

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Dan Zeltzer @danzeltzer Apr 1

🚨New in AER🚨: "Negative Control Falsification Tests for IV Designs" (@DanieliOren, @DanielNevo, Itai Walk, Bar Weinstein, @danzeltzer). doi.org/10.1257/aer.20…

Common placebo test implementations may reject valid IVs.

We're coming to save your IVs! 🧵

Screenshot of the paper's title page from the American Economic Review (2026, Vol. 116, No. 4). Title: "Negative Control Falsification Tests for Instrumental Variable Designs" by Oren Danieli, Daniel Nevo, Itai Walk, Bar Weinstein, and Dan Zeltzer. The abstract states that IV designs are typically tested using two types of falsification tests, characterized as conditional independence tests between negative control variables and the IV or outcome. The paper describes conditions these proxies must satisfy, shows these tests examine not only independence and the exclusion restriction but also functional form assumptions, and reveals that conventional applications may flag problems even in valid IV designs.

Dan Zeltzer @danzeltzer

Dan Zeltzer @danzeltzer Apr 26, 2025

The Lucas Critique as it applies to AI in medicine (risk prediction models that guide interventions may not appear accurate if the interventions work) ai.nejm.org/doi/full/10.10…

ai.nejm.org Challenges in the Postmarket Surveillance of Clinical Prediction Models Predictive artificial intelligence (AI) models enhance clinical workflows with applications such as prognostication and decision support, yet suffer from postdeployment performance challenges due t...

Dan Zeltzer @danzeltzer Apr 19, 2025

For o3/o4-mini
x.com/littmath/statu…

Dan Zeltzer @danzeltzer Feb 5, 2025

Nice review of "Deep Research" for math (tldr not there yet)
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Dan Zeltzer @danzeltzer Apr 14, 2025

I'm happy to share that I will be joining @UCBerkeleySPH as an associate professor this summer.

Grateful for the opportunity and sad to leave the Berglas School of Economics at Tel Aviv University, my home for years as both student and faculty.