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Dan Ly

@meddly.bsky.social
863 followers 306 following 83 posts

Physician and health economist. Assistant prof at UCLA GIM&HSR. Studying physician decision-making and health care disparities. sites.google.com/view/danply

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Dan Ly @meddly.bsky.social · 24/09/2026
Interesting paper by @claireboone.bsky.social in @jamainternalmed.com. When faced with incentive to "control" hypertension, docs more likely to recheck BP, choose the lower reading, document BP as controlled, and less likely to intensify BP meds. This results in ⬆️ hospitalizations for CV events!
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NIHCM @nihcm.bsky.social · 16/09/2026
NIHCM’s September Newsletter is out 🗞️ This month, we're exploring GLP-1s, prescription drug affordability, postpartum mental health, vaccines, and more. We also have an exclusive Q&A on diabetes preventive therapies with @meddly.bsky.social Read it here: bit.ly/NIHCMSept26n... #NIHCMnewsletter
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Dan Ly @meddly.bsky.social · 20/07/2026
🚨New paper!🚨Who orders more testing: male physicians or female physicians? And what are the implications on patient outcomes? We examine these questions in the emergency department (ED) in @jamainternalmed.com .🧵1/
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Dan Ly @meddly.bsky.social · 10/07/2026
Thank you for your support @nihcm.bsky.social!
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Ari B Friedman @abfriedman.com · 07/06/2026
Excited for our #ASHEcon panel TUESDAY 10:15am on natural experiments in acute care. Papers on decisionmaking in surgeon-anesthesiologist dyads, emergency attending peer dyads, and clustering of patient acuities. ashecon.confex.com/ashecon/2026...
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Dan Ly @meddly.bsky.social · 07/06/2026
Reminder, if you’re going to @ashecon.bsky.social 2026, come to our Wednesday session of creative uses of recession discontinuity with some of the best in the business, including @aschwartz.bsky.social, @vinisingh.bsky.social, @dzeltzer.bsky.social, and @mlbarnett.bsky.social!
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Dan Ly @meddly.bsky.social · 05/06/2026
Anticipated FOMO: Evidence from choosing among concurrent sessions during @ashecon.bsky.social 2026
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Dan Ly @meddly.bsky.social · 28/05/2026
Another clinically-oriented research letter from one of my grants, published in JGIM. In it, we find that low usage of diabetes preventive therapies (meds and weight management programs) among Vets with evidence of prediabetes. And 1/4 of our cohort develop diabetes! 1/2
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Dan Ly @meddly.bsky.social · 29/04/2026
Another striking study: RCT showing that a subsidy for produce did not improve outcomes such as HbA1c or ED visits (or BP or BMI). There may be other benefits, but if trying to improve these outcomes, providing such a subsidy isn't where you want to put your money in.
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Dan Ly @meddly.bsky.social · 29/04/2026
An important paper showing that, for Veterans visiting an ED with a mental health condition, having delayed follow up causes decreased engagement with mental health care and increases mortality.
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Dan Ly @meddly.bsky.social · 28/04/2026
New letter in @jamanetworkopen.com! A clinically-oriented one examining the setting where meds affecting cognition (e.g., antipsychotics) are prescribed from. We find they are disproportionately prescribed from acute or post-acute settings (i.e., emergency room, hospital, SNF). 1/3
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Dan Ly @meddly.bsky.social · 02/03/2026
If you're buying plane tickets to ASHEcon '26, make sure you stay for our session (last of the conference) of 3 RDs studying heuristics, stigma, & guidelines. With @aschwartz.bsky.social, @vinisingh.bsky.social, @dzeltzer.bsky.social, and @mlbarnett.bsky.social! ashecon.confex.com/ashecon/2026...
ashecon.confex.com
Discontinuities In Clinical Practice: RD Evidence on Heuristics, Stigma, and Guideline Thresholds
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Aaron Schwartz @aschwartz.bsky.social · 27/02/2026
Looks like the ASHEcon 2026 conference agenda has dropped. Warning: Don't take an early departure flight the last day, or you'll miss a session I'm really excited about. Not 1, not 2, but 3 (!) papers using RDs to understand physician decision-making. ashecon.confex.com/ashecon/2026...
ashecon.confex.com
Discontinuities In Clinical Practice: RD Evidence on Heuristics, Stigma, and Guideline Thresholds
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Paul Goldsmith-Pinkham @paulgp.com · 06/11/2025
Excited to post a new working paper with @instrumenthull.bsky.social and Michal Kolesár: arxiv.org/abs/2511.03572 Will post a thread on it soon, but if you're interested in judge/examiner designs, I think you'll find this guide very helpful!
arxiv.org
Leniency Designs: An Operator's Manual
We develop a step-by-step guide to leniency (a.k.a. judge or examiner instrument) designs, drawing on recent econometric literatures. The unbiased jackknife instrumental variables estimator (UJIVE) is...
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Dan Ly @meddly.bsky.social · 02/11/2025
Kid a few years from now: “Daddy, why is my name Yoshinobu?”
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Dan Ly @meddly.bsky.social · 29/10/2025
Someone on a listserv I was on asked how to install SPSS on a server. I scoffed before realizing one day soon I'll be asking how to install Stata on a server and someone else will be rolling their eyes...
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Dan Ly @meddly.bsky.social · 17/09/2025
A great listen!!!
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Michael L. Barnett @mlbarnett.bsky.social · 08/09/2025
New paper w/ Brian McGarry, Ashvin Gandhi, and Drew Wilcock in @jamainternalmed.com! Hospitals are complaining across the US that patients are "stuck" waiting for rehab beds at nursing homes when they are medically stable and ready for discharge. What is going on?? jamanetwork.com/journals/jam...
Question Has hospital length of stay increased more for Medicare
Advantage beneficiaries than for traditional Medicare beneficiaries
since the COVID-19 pandemic?Findings In this cohort study involving more than 89 million
hospitalizations from 2017 to the third quarter of 2023, Medicare
Advantage beneficiaries experienced disproportionately greater
increases in extended hospital stays, especially among those
discharged to skilled nursing facilities.Meaning These findings suggest that the Medicare Advantage
plan design and practices may contribute to hospital discharge
delays, with implications for patient outcomes and hospital
capacity as enrollment continues to rise.
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Dan Ly @meddly.bsky.social · 23/12/2024
🚨New paper🚨The emergency department (ED) is like a box of chocolates; you never know which doc you're gonna get. What happens when you get a doc that admits patients more often? Are you less likely to die? @stephencoussens and I explore this question in @JAMAInternalMed.🧵1/
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Dan Ly @meddly.bsky.social · 28/11/2023
😭😭😭
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Patricia Saenz-Armstrong @psaenz.bsky.social · 31/10/2023
Happy Halloween, y’all. Here’s something scary for you today. #EconSky #EduSky
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Avner Strulov-Shlain 🎗️ @avnershlain.bsky.social · 16/10/2023
PSA: many of your Israeli, Palestinian, and Jewish friends and colleagues are experiencing trauma and grief right now. Reach out to show you care about them. One human being to another. Politics aside. I’m not okay but I gain much strength and comfort from all of you who did so. Thank you.
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