I’ve been told for years that it’s legally and ethically impossible to share medical RCT data. In 2024, the BMJ made sharing anonymised data mandatory, and now lots* of folk do it. Interesting how the barriers evaporated like that, isn’t it? *not everyone, compliance problems exist.

Availability of clinical trial individual patient data in the BMJ before and after adoption of a stringent data-sharing policy, compared with recent rates at other major medical journals

Background In 2024, the BMJ updated its data-sharing policy for clinical trials, requiring open deposit of deidentified individual participant data (IPD) before publication. We considered whether data...

medrxiv.org

All four books I've co-authored are freely available online for non-commercial use: - Bayesian Workflow at avehtari.github.io/Bayesian-Wor... Links to other three books are in the quoted post 👇 (too many books to fit in one post!)

Bayesian Workflow book: Website – Bayesian Workflow book

Website for the Bayesian Workflow book by Gelman, Vehtari, McElreath, et al. — case studies, code, and exercises in R and Stan.

avehtari.github.io

Aki Vehtari@avehtari.bsky.social · 2y ago

All three books I've co-authored are freely available online for non-commercial use: - #Bayesian Data Analysis, 3rd ed (aka BDA3) at stat.columbia.edu/~gelman/book/ - #Regression and Other Stories at avehtari.github.io/ROS-Examples/ - Active Statistics at avehtari.github.io/ActiveStatis...

A must read by @jwlockhart.bsky.social on the money behind open science. He’s spot on that there are some subjects you just can’t touch with typical peer reviewers in #metascience scatter.wordpress.com/2026/07/31/s...

science funding and the cherry picking problem

Science publishing–like all of science–requires money. There’s no getting around it, even with the open science movement. What appears free to many authors and readers still requires money and infr…

scatter.wordpress.com

The Journal of Mathematical Philosophy is now open for submissions! It is fully open access, with no fees for authors or readers. Please help spread the word, and do consider sending us your work. Very happy to be part of the inaugural editorial board. mathematicalphilosophy.org/mathphil

Happy friday! open.substack.com/pub/rottenan...

Skin in the Game

A shorter one this time, shadows and ambiguity, articulation as a norm violation

open.substack.com

New blog post! Odds ratios are...a bit weird. Here I explain two problems (interpretation, non-collapsibility) and provide some simple recommendations for improved reporting. www.the100.ci/2026/07/30/r...

Reviewer notes: Odds ratios are really odd

When psychological researchers investigate binary outcomes, they routinely report odds ratios to quantify the strength of an effect or an association. This is quite understandable given that psycholog...

the100.ci

I'm interested in finding and potentially supporting people who are interested in doing long-form writing on the big efforts in global health: Gavi, Global Fund, PEPFAR, etc. If this is you or someone you know, please make yourself known!

priorsense R package has now JOSS paper "priorsense: Efficient prior and likelihood sensitivity checks for Bayesian models in R" you can cite, too doi.org/10.21105/jos... with Noa Kallioinen, Topi Paananen, and @paulbuerkner.com priorsense achieved also a gold badge from @ropensci.org review!

priorsense: Efficient prior and likelihood sensitivity checks for Bayesian models in R

Kallioinen et al., (2026). priorsense: Efficient prior and likelihood sensitivity checks for Bayesian models in R. Journal of Open Source Software, 11(123), 11036, https://doi.org/10.21105/joss.11036

doi.org

We just updated the preprint (w @paulbuerkner.com) to address some reviewer feedback. Most notably we added a case study where the model space is huge (2^100) and sampled explicitly with JAGS Things still work, though aggregating the results to get something meaningful becomes important. 1/2

Martin Modrák@modrakm.bsky.social · 5mo ago

Preprint alert: Simulation-based validation of Bayes Factor computation with @paulbuerkner.com and S. Stroppel. We bring lessons learned in SBC to validation of BFs. arxiv.org/abs/2508.11814 The idea is simple: simulate data from the models, fit and see if the inferences are calibrated. 1/10

Uh, did Emily Wilson's Odyssey takedown crash the @lrb.co.uk website?

Imagine that in pre-publication peer review, the reliability of a 3-reviewer composite is .70. The journal accepts the top 10% of papers according to average review score. What is the reliability of the original reviewers in the subset of published papers? (Answer in alt text)

Thinking about LLMs for programming, I am reminded of "Worst practices should be hard" (https:// haskellforall.com/2016/04/worst-practices-should-be-hard) - most "good practice" for LLMs, I've seen appears to require fighting the tool and the ecosystem, whereas worst practice is almost effortless...

Worst practices should be hard

Best practices should be the path of least resistance

haskellforall.com

Recent case, re-run of the authors' code failed on a first-stage regression, blocked code from completing. Hard to initially diagnose, because "qui do regression_55.do" shows no output... 🤦Back and forth with authors, they provide evidence that it works on their system. We send MWE to Stata support👇

Folks!!! You can vote on various designs for the new euro banknotes and some of these look amazing. Also, we could make birb money happen!!!

Moritz Peter Fritschle@moritzfritschle.bsky.social · 3w ago

The euro banknotes seem to get a new look, and the @ecb.europa.eu has hosted a survey, asking which desing is the preferred one. I really like the stork on the 50€ banknote. surveys.ecb.europa.eu/10b/banknote...

How often are multiverse analyses implemented, not just cited/discussed? How are they implemented? 🧵 New preprint on the uptake and implementation of multiverse-style analyses 👇 www.biorxiv.org/content/10.6...

Uptake and Implementation of Multiverse-style Analyses Across 613 Studies

Empirical conclusions can depend on the many individual choices researchers make when analyzing data. Multiverse-style analyses address this by computing results across a set of specifications rather ...

biorxiv.org

After a couple of months hiatus, a new blog post on directly parameterizing structural zeros in correlation matrices. spinkney.github.io/posts/post-1...

New paper out now 🥳 When psychologists discuss generalisability, they often refer to vague notions of representativeness. We provide an accessible intro to the total survey error framework as a tool to reason about this more rigorously. w @taymalsalti.bsky.social @ruben.the100.ci >

This is an interesting and good take on multiverse analyses…

ArXiv Paperboy (Stat.ME+Econ.EM)@paperposterbot.bsky.social · last mo.

arXiv📈🤖 Multiverse analysis, abdication of responsibility and manufacturing of doubt By Modr\'ak

“In particular, by using a multiverse, a bad actor needs not commit to a single model and thus can raise the perceived bar for criticism of their position. Including bad or wrong model is not a problem for them as they are just asking questions and isn’t that what science is truly about?”

Martin Modrák@modrakm.bsky.social · last mo.

Multiverse analysis, abdication of responsibility and manufacturing of doubt: I have written on some downsides I see with multiverse analysis (which I like in principle): arxiv.org/abs/2607.14623 I was inspired/provoked to write it by @dingdingpeng.the100.ci (thanks!)

Multiverse analysis, abdication of responsibility and manufacturing of doubt: I have written on some downsides I see with multiverse analysis (which I like in principle): arxiv.org/abs/2607.14623 I was inspired/provoked to write it by @dingdingpeng.the100.ci (thanks!)

The American Diabetes Association appears not to have learned their lesson the first time around (below). Now they've blocked publication of an editorial about this event that was slated for publication in the same journal, Diabetes Care, this week. But here it is. You know what to do.

Carl T. Bergstrom@carlbergstrom.com · 2mo ago

From 500 views in the first two months to over 100,000 views in the last few days. The ADA opinion piece that was too scary to be distributed at the ADA meeting has gone full Streisand. Y'all are doing the Lord's work.

Reviews of our Bayesian Workflow book from Bin Yu, David Spiegelhalter, Brad Efron, Christian Robert, Rohan Alexander, and Mine Doğucu! statmodeling.stat.columbia.edu/2026/07/16/r...

#Statsky I need your help. If you have a consulting gig or been involved in building a (stat. modeling) consulting center, would you be willing to share your business model, sample contracts/terms/conditions, your approach to recruiting clients... esp. in an academic setting, I'd appreciate it!

Finally, got a copy of Bayesian workflow book in my hand, and it looks awesome! I really like we did get full colors for figures, too

🤩 bingkaiwang.github.io/RCT_Bench-ma...

Norm Matloff (1948-2026) @matloff.bsky.social I was made aware of the post below made by his daughter. We lost another friend and valued long-time contributor the #Rstats community, gone far too soon, and sure to be missed. His memory will be a blessing.

Hey, folks. I'm looking for open access person-time datasets that represent a competing risks structure. I want to analyze these datasets and write about those analyses to help people understand competing risks analysis methods. Nearly all of the data sets I have used for this are closed source.

forever tapping the @protik.bsky.social sign: "you don't have to think someone is irredeemable to be able to notice that they haven't redeemed themselves"

Sunsette / Cynthia Skye@sunderedmarches.com · last mo.

I can be an overly credulous believer in redemption and second chances. That is precisely why I never bought the redemption angle on Platner; he didn't actually do anything to redeem himself. He just kinda mumbled denials with annoyance between nondescript announcements that he'd changed.

Just got my author copy of Bayesian workflow! Check out avehtari.github.io/Bayesian-Wor... if you want a copy, a discount code, get source code for our examples and stuff.

Tired of your kids‘ boring boardgames? Replace a regular die with a D12 to be done in half the time! Follow me for more parenting advice 💅🏽