Ari B Friedman
@abfriedman.com
This is my personal account. Faculty at UPenn. Emergency doc, health economist, geriatrics and privacy researcher. Views are my own. RT does not imply endorsement.
This is not how government in a democracy should function. It's not how it functioned until 2025.
The Wisconsin component of the analysis here is revealing. Evidence is consistent with DOGE strategically delaying contract terminations in WI until after the 2025 state Supreme Court elections to mitigate electoral risk.
December 26, 2025 at 2:50 PM
This is not how government in a democracy should function. It's not how it functioned until 2025.
Reposted by Ari B Friedman
Did you know that from tomorrow, Qualtrics is offering synthetic panels (AI-generated participants)?
Follow me down a rabbit hole I'm calling "doing science is tough and I'm so busy, can't we just make up participants?"
Follow me down a rabbit hole I'm calling "doing science is tough and I'm so busy, can't we just make up participants?"
December 16, 2025 at 5:38 PM
Did you know that from tomorrow, Qualtrics is offering synthetic panels (AI-generated participants)?
Follow me down a rabbit hole I'm calling "doing science is tough and I'm so busy, can't we just make up participants?"
Follow me down a rabbit hole I'm calling "doing science is tough and I'm so busy, can't we just make up participants?"
Reposted by Ari B Friedman
What if we could harness the complexity of the real world to guide clinical questions?
Atheen Venkataramani and Lizzie Bair explore this in their new paper by diving into how real-world shocks and policy changes could help answer the Q: Does this treatment work?
evidence.nejm.org/doi/full/10....
Atheen Venkataramani and Lizzie Bair explore this in their new paper by diving into how real-world shocks and policy changes could help answer the Q: Does this treatment work?
evidence.nejm.org/doi/full/10....
Natural Experiments to Inform Clinical Practice
Natural experiments refer to events or practices that result in similar individuals
receiving different services or interventions for arbitrary reasons. In the clinical
context, researchers may wis...
evidence.nejm.org
April 29, 2025 at 12:43 PM
What if we could harness the complexity of the real world to guide clinical questions?
Atheen Venkataramani and Lizzie Bair explore this in their new paper by diving into how real-world shocks and policy changes could help answer the Q: Does this treatment work?
evidence.nejm.org/doi/full/10....
Atheen Venkataramani and Lizzie Bair explore this in their new paper by diving into how real-world shocks and policy changes could help answer the Q: Does this treatment work?
evidence.nejm.org/doi/full/10....
Reposted by Ari B Friedman
"We welcome PhDs to a round table table discussion from assistant professors who were recently on the job market"
December 16, 2025 at 9:28 AM
"We welcome PhDs to a round table table discussion from assistant professors who were recently on the job market"
Reposted by Ari B Friedman
100%. Our Muslim friends and neighbors came forward and stood by us when we needed them. ❤️
Probably worth sharing again that after the Tree of Life Synagogue shooting in Pittsburgh, the local Islamic Center not only immediately showed up in person in solidarity but raised a significant amount of funds for victims.
rac.org/blog/muslim-...
rac.org/blog/muslim-...
rac.org
December 15, 2025 at 1:32 AM
100%. Our Muslim friends and neighbors came forward and stood by us when we needed them. ❤️
Reposted by Ari B Friedman
Hundreds Quarantined in South Carolina as Measles Spreads #medsky www.nytimes.com/2025/12/11/w...
Hundreds Quarantined in South Carolina as Measles Spreads
www.nytimes.com
December 13, 2025 at 12:02 PM
Hundreds Quarantined in South Carolina as Measles Spreads #medsky www.nytimes.com/2025/12/11/w...
Reposted by Ari B Friedman
✨NEW SCHOLARSHIP OPPORTUNITY✨
For trainees interested in a Geri EM experience!
Must be an AGEM member (free to join with SAEM membership)
Apply NOW until Feb 15, 2026
www.saem.org/about-saem/a...
@saemonline.bsky.social
#emergencymedicine #saem #agem #geriatricmedicine #emergencydepartment
For trainees interested in a Geri EM experience!
Must be an AGEM member (free to join with SAEM membership)
Apply NOW until Feb 15, 2026
www.saem.org/about-saem/a...
@saemonline.bsky.social
#emergencymedicine #saem #agem #geriatricmedicine #emergencydepartment
December 12, 2025 at 7:20 PM
✨NEW SCHOLARSHIP OPPORTUNITY✨
For trainees interested in a Geri EM experience!
Must be an AGEM member (free to join with SAEM membership)
Apply NOW until Feb 15, 2026
www.saem.org/about-saem/a...
@saemonline.bsky.social
#emergencymedicine #saem #agem #geriatricmedicine #emergencydepartment
For trainees interested in a Geri EM experience!
Must be an AGEM member (free to join with SAEM membership)
Apply NOW until Feb 15, 2026
www.saem.org/about-saem/a...
@saemonline.bsky.social
#emergencymedicine #saem #agem #geriatricmedicine #emergencydepartment
Reposted by Ari B Friedman
In response to recent posts about fabricated citations, someone was telling me how awesome Gemini is, and implied that because it's Google there's some kind of secondary checking of sources happening.
Anyway I asked for recent books about AI published by academic presses. This was quite a ride. 🧵
Anyway I asked for recent books about AI published by academic presses. This was quite a ride. 🧵
December 12, 2025 at 6:40 PM
In response to recent posts about fabricated citations, someone was telling me how awesome Gemini is, and implied that because it's Google there's some kind of secondary checking of sources happening.
Anyway I asked for recent books about AI published by academic presses. This was quite a ride. 🧵
Anyway I asked for recent books about AI published by academic presses. This was quite a ride. 🧵
Reposted by Ari B Friedman
It might be hard to convey to people outside economics just how seismic this is. The Trump effect has most certainly arrived to US academia.
I am delighted to share that Nobel laureates Esther Duflo and Abhijit Banerjee will join our Department of Economics @econ.uzh.ch at the University of Zurich on July 1, 2026, as Lemann Foundation Professors of Economics.
🧵 1/7
🧵 1/7
October 10, 2025 at 12:23 PM
It might be hard to convey to people outside economics just how seismic this is. The Trump effect has most certainly arrived to US academia.
Reposted by Ari B Friedman
Multiple large natural experiments have documented Shingles vaccine is linked with ~20-25% reduced risk of dementia and Alzheimer's disease. A new report today adds to that and extends the to slowing the progression of dementia @cellcellpress.bsky.social
www.cell.com/cell/fulltex...
www.cell.com/cell/fulltex...
December 2, 2025 at 4:00 PM
Multiple large natural experiments have documented Shingles vaccine is linked with ~20-25% reduced risk of dementia and Alzheimer's disease. A new report today adds to that and extends the to slowing the progression of dementia @cellcellpress.bsky.social
www.cell.com/cell/fulltex...
www.cell.com/cell/fulltex...
Reposted by Ari B Friedman
Forget about the dystopian nature of this, it will kill tourism through sheer cost of compliance.
NEW: Five years of social media history is only a fraction of what the US Government will shortly demand of overseas visitors.
The full requirements will end tourism in the United States.
Below is the full, mind-blowing list.
🚨THEY. WANT. YOUR. DNA.🚨
1/
The full requirements will end tourism in the United States.
Below is the full, mind-blowing list.
🚨THEY. WANT. YOUR. DNA.🚨
1/
December 11, 2025 at 4:21 PM
Forget about the dystopian nature of this, it will kill tourism through sheer cost of compliance.
@agem-saem.bsky.social Trainee Scholarship for geriatric emergency medicine has been reconceived and now available to medical students, residents, or post-docs. www.saem.org/about-saem/a...
AGEM Geriatric EM Away Rotation Scholarship | SAEM
AGEM is sponsoring a medical student, resident or other trainee (for example, post-doctoral student) interested in completing a geriatric emergency medicine experience.
www.saem.org
December 11, 2025 at 4:28 PM
@agem-saem.bsky.social Trainee Scholarship for geriatric emergency medicine has been reconceived and now available to medical students, residents, or post-docs. www.saem.org/about-saem/a...
tfw the guy who made this chart is going to be in charge of the fed
December 11, 2025 at 4:13 PM
AI in primary care scoping review: new work from Kevin Johnson's group.
link.springer.com/article/10.1...
"Several systemic issues emerged from the studies reviewed, including...rapid deployment of commercial AI tools without academic validation."
link.springer.com/article/10.1...
"Several systemic issues emerged from the studies reviewed, including...rapid deployment of commercial AI tools without academic validation."
Artificial Intelligence in Outpatient Primary Care: A Scoping Review on Applications, Challenges, and Future Directions - Journal of General Internal Medicine
Background Artificial intelligence (AI) has significant potential to impact clinical decision-making and improve patient outcomes in outpatient primary care. However, despite rapid advancements, the e...
link.springer.com
December 10, 2025 at 6:50 PM
AI in primary care scoping review: new work from Kevin Johnson's group.
link.springer.com/article/10.1...
"Several systemic issues emerged from the studies reviewed, including...rapid deployment of commercial AI tools without academic validation."
link.springer.com/article/10.1...
"Several systemic issues emerged from the studies reviewed, including...rapid deployment of commercial AI tools without academic validation."
Reposted by Ari B Friedman
New must-read from @candicenorwood.bsky.social — how periods in prison become a trap.
Incarcerated women and trans people are forced to choose between maintaining their dignity and health — or facing the penalties.
Incarcerated women and trans people are forced to choose between maintaining their dignity and health — or facing the penalties.
Punished for bleeding: How periods in prison become a trap
Many incarcerated women and trans people are forced to choose between maintaining their dignity and health — or facing penalties.
19thnews.org
December 9, 2025 at 7:57 PM
New must-read from @candicenorwood.bsky.social — how periods in prison become a trap.
Incarcerated women and trans people are forced to choose between maintaining their dignity and health — or facing the penalties.
Incarcerated women and trans people are forced to choose between maintaining their dignity and health — or facing the penalties.
Reposted by Ari B Friedman
“agents told her in the truck that if she didn’t watch herself “they were going to pull me over to the side of the road and give me this OC,” law enforcement shorthand for pepper spray”
In detention, they “cut off her wedding ring”
In detention, they “cut off her wedding ring”
Federal agents are arresting American citizens.
This isn’t about public safety - it’s about stoking fear.
www.mprnews.org/story/2025/1...
This isn’t about public safety - it’s about stoking fear.
www.mprnews.org/story/2025/1...
Federal agents arrest citizen observer watching ICE detain neighbors on her north Minneapolis block
Susan Tincher, a 55-year-old American citizen, appears to be the first observer arrested by federal immigration enforcement officers since the agency launched an immigration surge in the Twin Cities l...
www.mprnews.org
December 10, 2025 at 3:26 PM
“agents told her in the truck that if she didn’t watch herself “they were going to pull me over to the side of the road and give me this OC,” law enforcement shorthand for pepper spray”
In detention, they “cut off her wedding ring”
In detention, they “cut off her wedding ring”
Reposted by Ari B Friedman
Waiting for Instacart's rebuttal: "Critics are wrong; we are not extracting consumer surplus via price discrimination. We are merely randomizing prices to estimate a demand elasticity so we can extract consumer surplus better through uniform pricing."
December 10, 2025 at 2:15 AM
Waiting for Instacart's rebuttal: "Critics are wrong; we are not extracting consumer surplus via price discrimination. We are merely randomizing prices to estimate a demand elasticity so we can extract consumer surplus better through uniform pricing."
Reposted by Ari B Friedman
Wow... NYC's congestion pricing has led to big drops in PM2.5 and real improvements in local air quality.
December 9, 2025 at 7:27 PM
Wow... NYC's congestion pricing has led to big drops in PM2.5 and real improvements in local air quality.
Reposted by Ari B Friedman
Cool new evidence from postwar occupied Japan: exposure to radio programs aired by the US occupying force led to ⬆️ women's political turnout, ⬇️ fertility. By Okuyama published in the JDE
December 9, 2025 at 7:24 PM
Cool new evidence from postwar occupied Japan: exposure to radio programs aired by the US occupying force led to ⬆️ women's political turnout, ⬇️ fertility. By Okuyama published in the JDE
Dr. Sunita Desai's team in the Department of Population Health at NYU is hiring for in-person, hybrid, or remote work. Great team and professor to work for doing brilliant, impactful work.
med.nyu.edu/faculty/suni...
Descriptions below.
med.nyu.edu/faculty/suni...
Descriptions below.
Sunita M. Desai
med.nyu.edu
December 9, 2025 at 7:44 PM
Dr. Sunita Desai's team in the Department of Population Health at NYU is hiring for in-person, hybrid, or remote work. Great team and professor to work for doing brilliant, impactful work.
med.nyu.edu/faculty/suni...
Descriptions below.
med.nyu.edu/faculty/suni...
Descriptions below.
Can recommend this team!
🚨 Predoc Opportunity at Yale! 🚨
Care about research that changes policy?
My research team works within state government to advance evidence and learning for a smarter safety net!
And our predocs have excellent PhD placements. Apply here!
#EconSky #EconTwitter #Predoc #ResearchJobs #HealthPolicy
Care about research that changes policy?
My research team works within state government to advance evidence and learning for a smarter safety net!
And our predocs have excellent PhD placements. Apply here!
#EconSky #EconTwitter #Predoc #ResearchJobs #HealthPolicy
Economics of the Safety Net
tobin.yale.edu
December 9, 2025 at 7:40 PM
Can recommend this team!
Reposted by Ari B Friedman
The Yale crew is awesome and doing incredibly innovative things in the Medicaid and SNAP space.
If you're interested in health policy and a predoc, run, do not walk, to apply for this!
If you're interested in health policy and a predoc, run, do not walk, to apply for this!
🚨 Predoc Opportunity at Yale! 🚨
Care about research that changes policy?
My research team works within state government to advance evidence and learning for a smarter safety net!
And our predocs have excellent PhD placements. Apply here!
#EconSky #EconTwitter #Predoc #ResearchJobs #HealthPolicy
Care about research that changes policy?
My research team works within state government to advance evidence and learning for a smarter safety net!
And our predocs have excellent PhD placements. Apply here!
#EconSky #EconTwitter #Predoc #ResearchJobs #HealthPolicy
Economics of the Safety Net
tobin.yale.edu
December 8, 2025 at 8:48 PM
The Yale crew is awesome and doing incredibly innovative things in the Medicaid and SNAP space.
If you're interested in health policy and a predoc, run, do not walk, to apply for this!
If you're interested in health policy and a predoc, run, do not walk, to apply for this!
Reposted by Ari B Friedman
Reposted by Ari B Friedman
One thing that has become crystal clear to me over the course of co-teaching the vaccine course with @bachynski.bsky.social is just how hard thousands of people have worked since the time of Edward Jenner to improve vaccine technology & safety. It's a crime that we are just throwing all of this away
Vaccines are the greatest public health success story in history.
So much death and suffering can be stopped entirely, or dramatically reduced.
And people are just throwing it away.
So much death and suffering can be stopped entirely, or dramatically reduced.
And people are just throwing it away.
December 5, 2025 at 6:30 PM
One thing that has become crystal clear to me over the course of co-teaching the vaccine course with @bachynski.bsky.social is just how hard thousands of people have worked since the time of Edward Jenner to improve vaccine technology & safety. It's a crime that we are just throwing all of this away
Reposted by Ari B Friedman
Kennedy's zombie ACIP panel just voted to restrict hepatitis B vaccine for newborns. Experts say it will harm children for no reason. www.ms.now/news/rfk-cdc...
ACIP member Dr. Cody Meissner:
"'Do no harm' is a moral imperative. We are doing harm by changing this wording. And I vote no."
ACIP member Dr. Cody Meissner:
"'Do no harm' is a moral imperative. We are doing harm by changing this wording. And I vote no."
RFK Jr.’s CDC panel: No more hepatitis B vaccine for some newborns
The CDC's vaccine advisory panel, stocked with anti-vaccine activists and loyalists to RFK Jr., voted Friday to stop recommending a birth dose of vaccine.
www.ms.now
December 5, 2025 at 3:36 PM
Kennedy's zombie ACIP panel just voted to restrict hepatitis B vaccine for newborns. Experts say it will harm children for no reason. www.ms.now/news/rfk-cdc...
ACIP member Dr. Cody Meissner:
"'Do no harm' is a moral imperative. We are doing harm by changing this wording. And I vote no."
ACIP member Dr. Cody Meissner:
"'Do no harm' is a moral imperative. We are doing harm by changing this wording. And I vote no."