Anne-Laure Boulesteix
@boulesteixlaure.bsky.social
730 followers 200 following 70 posts
Statistician and metascientist. Professor of biometrics at LMU Munich Medical and Mathematical Faculties, committed to open science, member of the Munich Center of Machine Learning. Opinions are mine.
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Reposted by Anne-Laure Boulesteix
markrubin.bsky.social
Workshop on “Evidence & Uncertainty in Science: Methodological, Philosophical and Meta-Scientific Issues”

10th & 11th June, Uni of Tübingen, in-person only

uni-tuebingen.de/de/281247#c2...

‪With @cruwelli.bsky.social, @boulesteixlaure.bsky.social, @babeheim.bsky.social, & @hendriks.bsky.social
boulesteixlaure.bsky.social
Probably because it is a big effort to check the code? Biometrical Journal does it. They have reproducibility editors who do excellent job. As an AE or reviewer for any journal, I always require code to be available.
boulesteixlaure.bsky.social
NEW METASCIENTIFIC PREPRINT: "The impact of the storytelling fallacy on real data examples in methodological research" by M. Mandl et al:

arxiv.org/html/2503.03...

or why it is misleading to argue in favor of a method just because one can tell a nice story on the results obtained for n=1 dataset.
The impact of the storytelling fallacy on real data examples in methodological research
arxiv.org
boulesteixlaure.bsky.social
SPOILER: Forget "naive" confidence intervals computed by considering the results in the K folds as iid observations...

The K folds in K-fold-cross-validation are NOT independent!
And this cannot just be ignored...
boulesteixlaure.bsky.social
NEW PAPER: Confidence intervals for (e.g., cross-validation) prediction error

by H. Schulz-Kümpel, S. Fischer et al.

"Constructing confidence Intervals for “the” Generalization
Error – a Comprehensive Benchmark Study"

openreview.net/pdf?id=x7kCj...
openreview.net
Reposted by Anne-Laure Boulesteix
asanchez-tojar.bsky.social
This Registered Report masterpiece just dropped at BMC Biology, brilliantly led by a great team with the help of 300+ analysts & reviewers

Same question, same data: go figure!

tl;dr: Substantial heterogeneity among results comes from differences among analytical choices

🔗 doi.org/10.1186/s129...
Reposted by Anne-Laure Boulesteix
stephensenn.bsky.social
IMO it’s a mistake to give stats to 1st year med students. It’s not why they chose medicine & they resent it. Better to wait until they have developed some curiosity for it. I argued unsuccessfully for this during my time at UCL.
Reposted by Anne-Laure Boulesteix
miguelhernan.org
Does #randomization ensures balance of risk factors between groups? Consider this:

In Denmark 860 individuals were randomly allocated to either intervention or control. Individuals were unaware of their allocation. No intervention took place. Mortality was higher in the intervention group (p=0.003)
Reposted by Anne-Laure Boulesteix
malikaihle.bsky.social
So happy to see you all here! As the @lmu-osc.bsky.social coordinator, I just started a new project: coaching individual research groups so members can switch together to #OpenResearch - a tailored pedagogical intervention to maximise chances of sustainable adoption in the group, and a lot of fun! 🧵
boulesteixlaure.bsky.social
I could nnot agree more. One problem is that for some packages (not those you are involved in ;-)) it is difficult to figure out which method/theory they implement. The link between theory and implementation is not well documented. So people just mention the package name in place of the method...
Reposted by Anne-Laure Boulesteix
wkhuber.bsky.social
Something that's been bugging me for a while in bioinformatics data analysis is this overreliance on packages, workflows and what's been called "cargo cult science".

Can we have more conceptual thinking, more theory?
Asking for what we really want to achieve and what we need to do gets us there.
boulesteixlaure.bsky.social
Happy to have been involved in this exciting project on the registration, design and reporting of statistical simulation studies, with @bsiepe.bsky.social @timpmorris.bsky.social et al., appeared in Psychological Methods:
bsiepe.bsky.social
Journal version at doi.org/10.1037/met0..., final openly available version at doi.org/10.31234/osf....
I have learned a lot from this collaboration, which started with a cold email at the beginning of my PhD - very much worth it
APA PsycNet
doi.org
Reposted by Anne-Laure Boulesteix
wkhuber.bsky.social
AI researchers: hold my beer —
Old model performed slightly not worse when data were generated by the new generative AI method I just made up
Reposted by Anne-Laure Boulesteix
Reposted by Anne-Laure Boulesteix
bsiepe.bsky.social
Simulation studies are essential for methods research. How well are they conducted & reported? How can we improve their quality? Out now in Psychological Methods, see 🧵 below.
With @fbartos.bsky.social, @timpmorris.bsky.social, @boulesteixlaure.bsky.social, @danielheck.bsky.social & Samuel Pawel
bsiepe.bsky.social
We reviewed 100 psych. simulation studies & find room for improvement in planning/reporting. As a remedy, we (František Bartoš, @timpmorris.bsky.social Anne-Laure Boulesteix, @danielheck.bsky.social & Samuel Pawel) present ADEMP-PreReg, a simulation study preregistration & reporting template 🧵/1
Reposted by Anne-Laure Boulesteix
richarddriley.bsky.social
MEMTAB 2025 pre-conference courses news!

2 options:
- An Introduction to Clinical Prediction Models and Sample Size Calculations for Model Development & Evaluation
- Systematic Reviews of Prognosis Studies

Just £50 when registering for conference!

Details 👇
uobevents.eventsair.com/memtab-2025/...
Pre-conference Courses - MEMTAB 2025
uobevents.eventsair.com
Reposted by Anne-Laure Boulesteix
pausalz.bsky.social
We must stand against the arbitrary categorization of continuous variables!

... and that's why I'm proud to announce my support of abolishing time zones in favor of the time gradient
Two maps the the contiguous United States. The first is colored with the 4 time zones. Above that map states "say no to time zones". The bottom is the same map but with a continuous color gradient. Above that map states "say yes to the time gradient"
Reposted by Anne-Laure Boulesteix
Reposted by Anne-Laure Boulesteix
wkhuber.bsky.social
Independent GroupLeader / PI position in
AI in Genome Biology, Multimodal Omics
at European Molecular Biology Lab (EMBL), Heidelberg!
www.embl.org/jobs/positio...

Looking in particular for researchers with quantitative/ methodological background who want to dive into leading edge biology research.
Reposted by Anne-Laure Boulesteix
wkhuber.bsky.social
For all the new followers here: welcome!
Here some recent highlights:
(1/4) My eclectic and subjective list of scientific writing tips
Scientific writing tips – Huber Group @ EMBL
An eclectic and subjective list
www.huber.embl.de