iiinova — where your digital self keeps evolving

Jacob Jameson 📊 @jacobjameson.com · 28/06/2026

New Substack post related to some recently developed skills: Target Trial Emulation Skills for Claude Code jacobjameson.substack.com/p/target-tri...

jacobjameson.substack.com

Target Trial Emulation Skills for Claude Code

Most of the damage in observational research is done before a single model is fit.

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Center for Health Decision Science (CHDS) @ctrdecisionscience.bsky.social · 24/06/2026

Congratulations to CHDS' Jacob Jameson (@jacobjameson.com) for becoming the first repeat awardee of the Dean’s Award for Excellence in Student Teaching from the Harvard Kennedy School in more than a decade. hsph.me/jameson-HKS-...

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Center for Health Decision Science (CHDS) @ctrdecisionscience.bsky.social · 03/04/2026

CHDS doctoral student Jacob Jameson (@jacobjameson.com) was a finalist in the Three Minute Thesis (3MT®) competition for his thesis, “The Impact of Batching Advanced Imaging Tests in Emergency Departments.” hsph.me/jameson-fina...

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Jacob Jameson 📊 @jacobjameson.com · 11/01/2026

⏰ 3 days left! SMDM (@smdm.bsky.social) 2026 short course proposals due Tuesday (I'm short course co-chair this year) Past topics: DES in R, causal inference, measuring preferences, value of information, reproducible programming Oslo 🇳🇴 | 6.28–7.1 #smdm2026

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Center for Health Decision Science (CHDS) @ctrdecisionscience.bsky.social · 17/09/2025

Congratulations to CHDS's @jacobjameson.com and all the finalists!

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Jacob Jameson 📊 @jacobjameson.com · 17/09/2025

Excited to be named a finalist for the INFORMS Health Applications Society student paper competition for my paper on discretionary image batching in the emergency department! Paper here 👇 papers.ssrn.com/sol3/papers....

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Harold Pollack @haroldpollack.bsky.social · 13/08/2025

Losing a friend. Older men have the highest suicide rate of any demographic group. This challenge doesn't get nearly the attention it should. www.chicagotribune.com/2025/08/13/o...

chicagotribune.com

Harold Pollack: I studied the high male suicide rate. Then I lost my friend to it.

We middle-aged and older men face higher suicide rates than are found among our teenage sons and grandsons, or among women at any age.

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Center for Health Decision Science (CHDS) @ctrdecisionscience.bsky.social · 30/06/2025

Check out this new article by CHDS doctoral student @jacobjameson.com and colleagues

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Jacob Jameson 📊 @jacobjameson.com · 28/06/2025

🚨 NEW in American Journal of Preventive Medicine with Nate Glasser, Nabil Baker, Harold Pollack, & Elizabeth Tung We show that permissive state firearm policies amplify sex differences in suicide—especially among young and older men 🔗 t.co/1kZ24LPkmW

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Jacob Jameson 📊 @jacobjameson.com · 28/05/2025

Unfortunately, one of the many the grants canceled at @Harvard.edu was my T32 in Comparative Effectiveness Research for Suicide Prevention If you’re coming to #SMDM47 @smdm.bsky.social come see the previously funded great work we are doing related to suicide prevention

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Jacob Jameson 📊 @jacobjameson.com · 15/05/2025

If you’re looking to improve your collaborative workflow, computational reproducibility, or just how to make the most out of version control — this is for you 👇👇

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Center for Health Decision Science (CHDS) @ctrdecisionscience.bsky.social · 14/05/2025

If you are going to @smdm.bsky.social consider this short course with @madisoncoots.com and CHDS's @jacobjameson.com

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Jacob Jameson 📊 @jacobjameson.com · 05/03/2025

Woo 🥳 3rd consecutive year I will be teaching my reproducibility and project management short course at #SMDM annual meeting ALSO if anyone knows any health/med journals looking to up their code sharing and reproducibility requirements please let me know 🙏

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Jacob Jameson 📊 @jacobjameson.com · 04/03/2025

🚨New in Clinical Pharmacology & Therapeutics We find underrepresented groups have significantly lower exposure to medications with actionable PGx guidance—highlighting a critical obstacle to equitable genomically-guided personalized medicine 💊 ascpt.onlinelibrary.wiley.com/doi/10.1002/...

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Jacob Jameson 📊 @jacobjameson.com · 19/02/2025

Reminded of a special memory: in 4th grade my best friend Zach came to school kinda down. I asked what’s wrong and he said he just listened to the saddest song and it’s got him feeling kinda down. He pulls out his iPod to have me listen to the theme song from the tv show Scrubs

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Jacob Jameson 📊 @jacobjameson.com · 05/02/2025

Would you rather be seen by an ED physician who orders their tests in a batch or in sequence? 👩‍⚕️👨‍⚕️🩻 New in Feb 2025 issue of HSR by Soroush Saghafian, Nicole Hodgson, Rob Huckman, and I

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Jacob Jameson 📊 @jacobjameson.com · 29/01/2025

"HKS researchers create an analytical framework that informs the ongoing medical debate over whether to use race-unaware or race-aware risk assessments." @madisoncoots.com 👏👏👏 t.co/95lyhM9Md4

t.co

https://www.hks.harvard.edu/faculty-research/policy-topics/health/should-race-be-used-determining-risk-disease-yes-and-no/

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Jacob Jameson 📊 @jacobjameson.com · 17/01/2025

Join our lab! PIAS-Lab at Harvard Kennedy School is accepting new applications for a Postdoctoral Fellow position. More information can be found 👇👇👇 scholar.harvard.edu/sites/schola...

scholar.harvard.edu

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Madison Coots @madisoncoots.com · 09/01/2025

So excited this finally out!! 🥳 Thread on our new paper 👇

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Alex Chohlas-Wood @alexchohlaswood.com · 08/01/2025

NEW in Management Science! My coauthors and I came up with a new consequentialist approach to designing equitable algorithms. Instead of imposing fairness criteria on an algorithm (like equal false negative rates), we aim for good outcomes. More in the 🧵 below! (1/)

A screenshot of the first page of our paper, Learning to Be Fair, showing the title and abstract.

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Jacob Jameson 📊 @jacobjameson.com · 22/12/2024

Happy birthday to my beautiful fiancée @madisoncoots.com ❤️

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Madison Coots @madisoncoots.com · 13/12/2024

🚨 Excited to share our new article in @annualreviews.bsky.social. Working with Kristin Linn, @5harad.com, Amol Navathe, and Ravi Parikh, we examine the fairness debates of seven prominent and controversial healthcare algorithms.🧵 madisoncoots.com/files/racial...

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Madison Coots @madisoncoots.com · 05/12/2024

The use of race in clinical risk models is heavily debated. While race-aware models can be more accurate, some are concerned about reinforcing racialized views of medicine. In our paper, we offer a new perspective on this debate. 🧵👇https://annals.org/aim/article/doi/10.7326/M23-3166

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Jacob Jameson 📊 @jacobjameson.com · 04/12/2024

Final office hours today for MPP microeconomics at the Kennedy school. Absolutely packed!

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Sharad Goel @5harad.com · 04/12/2024

Using race in medical risk assessments is hotly debated, with some arguing that doing so improves accuracy while others worry it reinforce pernicious attitudes. With @madisoncoots.com and colleagues, we identify a statistical twist that's been largely overlooked. 5harad.com/papers/race-...

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Giuseppe Tarantino, PhD @giuseppetara.bsky.social · 29/11/2024

1/10🚨 New Findings Alert! 🚨 Discover how genomic heterogeneity and ploidy help predict intrinsic resistance to anti-PD-1 immune checkpoint blockade (ICB) in metastatic melanoma. 🧬https://www.science.org/doi/10.1126/sciadv.adp4670 📝 Key takeaways from our latest study: 🧵👇

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Vincent Arel-Bundock @vincentab.bsky.social · 02/12/2024

Our JSS article is out! And now I get to focus on {marginaleffects} 1.0.0. Stay tuned. www.jstatsoft.org/article/view...

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Kevin Griffith @assumenormality.bsky.social · 02/12/2024

Applications for the Marshfield Institute's summer 2025 research internship program are now open through February 9th marshfieldresearch.org/srip

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Jacob Jameson 📊 @jacobjameson.com · 01/12/2024

Damn I know Twitter is suffering because I’m only gaining like 1 sexbot follower for every 10 followers I lose

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Jacob Jameson 📊 @jacobjameson.com · 30/11/2024

Absolutely sick airport find 💀

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Jacob Jameson 📊 @jacobjameson.com · 30/11/2024

‼️Genomic heterogeneity and ploidy help predict intrinsic resistance to anti-PD-1 immune checkpoint blockade (ICB) in metastatic melanoma. 🧬‼️ www.science.org/doi/10.1126/...

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Jacob Jameson 📊 @jacobjameson.com · 30/11/2024

I had work study all of undergrad and didn’t know what it meant until I graduated. Worked at Ross and Goodwill all of college so I just never used it. Just had lunch with my cousin who’s a freshman at Cal— also had work study and didn’t know what it meant. Why tf don’t universities tell you??

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Jacob Jameson 📊 @jacobjameson.com · 28/11/2024

Incredibly thankful for my fiancée @madisoncoots.com who improves every aspect of my life

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Jacob Jameson 📊 @jacobjameson.com · 24/11/2024

#postdoc opportunity! Interested in ML and healthcare operations research? The Public Impact Analytics Science (PIAS) Lab at the @harvardkennedy.bsky.social has a new round of hiring for Postdoctoral Fellow positions! 👇👇 scholar.harvard.edu/sites/schola...

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Jacob Jameson 📊 @jacobjameson.com · 28/11/2024

no way people are calling Bluesky posts “skeets” (sky + tweet). I just saw someone use the term reskeet seriously. I can’t do it

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Jacob Jameson 📊 @jacobjameson.com · 27/11/2024

Don’t tell me Bluesky has made it when I see you double posting here and X still

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Jacob Jameson 📊 @jacobjameson.com · 26/11/2024

Great upcoming panel by the Center for Suicide Research and Prevention for those interested in ML based prediction models for suicide prevention Register free @ bit.ly/CSRPw2

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Jacob Jameson 📊 @jacobjameson.com · 24/11/2024

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Jacob Jameson 📊 @jacobjameson.com · 24/11/2024

Something going on with Big Teeth

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Jacob Jameson 📊 @jacobjameson.com · 22/11/2024

Waiting for someone to put me in a starter pack smh

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Andrew Heiss @andrew.heiss.phd · 22/11/2024

From the archives: Have you (like me!) wondered what the ATT means and how it's different from average treatment effects? I use #rstats to explore why we care about (and how to calculate) the ATE, ATT, and ATU #polisky #episky #econsky www.andrewheiss.com/blog/2024/03...

Mirrored histogram showing “weird” parts of the population: treated people who were unlikely to be treated, and untreated people who were likely to be treated

Mirrored histogram showing pseudo-populations of treated and untreated people that have been reweighted to be more comparable and unconfounded

Table showing potential and realized outcomes for 9 simulated people

Before we calculate these different treatment effects with the realized outcomes instead of the hypothetical potential outcomes, let's look really quick at the practical difference between the true ATE, AT 1, and ATU. All three estimands are useful for policymaking!
The ATE is -15, implying that mosquito nets cause a 15 point reduction in malaria risk for every person in the country. This includes people who live at high elevations where mosquitoes don't live, people who live near mosquito-infested swamps, people who are rich enough to buy Bill Gates's mosquito laser, and people who can't afford a net but would really like to use one. If we worked in the Ministry of Health and wanted to know if we should make a new national program that gave everyone a free bed net, the overall reduction in risk is -15, which is probably pretty good!
The ATT is -16.29, which is bigger than the ATE. The effect of net usage is bigger for people who are already using the nets. This is because of underlying systematic reasons, or selection bias. Those using nets want to use them because they need them more or can access them more easily-they might live in areas more prone to mosquitoes, or they can afford to buy their own nets, or something else. They know themselves and understand some notion of their personal individual causal effect and seek out nets. If we removed access to their nets, it would have a strong effect.
The ATU is -13.63, which is smaller than the ATE. The effect of net usage is smaller for people who aren't using the nets. Again, this is because of selection bias. Those not using nets are likely not using them for systematic reasons-they live far away from mosquitoes, they've received a future malaria vaccine, they have some other form of mosquito abatement, or something else. Because they can read their own minds, they know that mosquito net use won't do much for them personally, so they don't seek out nets. If we expanded access to nets to them, they wouldn't benefit

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Sharad Goel @5harad.com · 21/11/2024

Instructors at 2- and 4-year colleges! Give your students free access to a virtual tutor optimized for learning by taking part in our study on using AI to improve education. Instructors receive a $1,000 honorarium. Sign up by Dec. 16! pingpong.hks.harvard.edu/eduaccess

pingpong.hks.harvard.edu

PingPong 🏓

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Jacob Jameson 📊 @jacobjameson.com · 07/11/2024

🚨New Paper 🚨 Our (Soroush Saghafian, Robert Huckman, Nicole Hodgson, and I) study examines heterogeneity and impacts of EM physician 🏥👩‍⚕️ batch-ordering practices (the practice of placing simultaneous test orders 🩻) onlinelibrary.wiley.com/doi/10.1111/...

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Jacob Jameson 📊 @jacobjameson.com · 22/10/2023

Looking forward to my first short course at #SMDM23 Is it possible to make talking about workflow exciting? God I hope so 👩🏻‍💻 👩🏾‍💻 👨🏻‍💻👨🏿‍💻🧑🏼‍💻👩🏽‍💻👩🏼‍💻 Go birds 🐦

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Alton Russell @altonrus.bsky.social · 20/10/2023

Retweeting for others but also future me. Looks like so much great content to dive into!

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