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Zimbo Boudewijns

@zimboboudewijns.bsky.social
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Data Steward at Utrecht University

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Reposted by Zimbo Boudewijns
Eiko Fried @eikofried.bsky.social · 14/10/2026
Fonagy’s mammoth review has no truck with the snowflake generation caricature: the rise in mental health problems is real, & so is the difficulties they cause. Young people are contending with more powerful forces than I ever faced. I am in awe of their courage. www.theguardian.com/society/2026...
theguardian.com
No ‘snowflakes’: mental health review says today’s youth have it harder and harms are real
Peter Fonagy lauds courage of young people and warns of consequences of rising prevalence of mental illness
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Maria Glymour @mariaglymour.bsky.social · 11/10/2026
Cool paper on environmental exposome research: concepts to nuts & bolts. R script for linking environmental exposure data to addresses. Popp et al Alz & Dem. doi: 10.1002/alz.71841 #publichealth #dataviz #DataSci #episky #MakingExposomeMeaningful
Fig 3 from Popp et al, showing spatial distribution of sum of exernal exposome variable deciles for 300,000 spots across the US (A) and zoomed in on LA, NYC, Dallas Fort Worth, and Chicago.
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Peter Tennant @pwgtennant.bsky.social · 01/10/2026
"Is an ultra-processed chocolate cake materially more harmful than a home-made one?" I enjoyed contributing to this response to The Lancet series on ultra-processed foods, which outlines some key limitations in the evidence that 'ultra-processing' is specifically harmful to health.
link.springer.com
Public health policy should be grounded in established evidence that acknowledges uncertainty: a response to The Lancet series on ultra-processed foods - BMC Medicine
Background The recent three-part Lancet series on ultra-processed foods (UPFs) argued that the displacement of traditional diets by UPFs is a major driver of poor diet quality and diet-related chronic...
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Colin Carlson @colincarlson.bsky.social · 25/09/2026
David Quammen's essay in The New York Times today closes with this paragraph. It's both a scientific falsehood, and an incredibly dangerous narrative. If you're willing to give me five minutes of your time, I'd like to explain why.
The Ebola virus doesn’t need to spill back. It abides in its reservoir host, and awaits its next opportunity. A virus can’t climb out of a bat or a monkey and fly off in search of human prey. It can only spill over. If humans left the reservoir host alone — not hunting it, not capturing it, not eating it, not exporting it live, not disturbing its forest habitat — the virus wouldn’t re-emerge in humans. It would remain where it is, harming no one. But of course that’s not what happens. And when viruses spill, they often spill into us, because the human population is such a big, busy target.
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Robin Blythe @rbly.bsky.social · 23/09/2026
New #healtheconomics #preprint in which we propose a proportionality argument for evaluation of clinical AI: that if the model leads to changes in the way patients are treated, then it must meet the evidentiary standards of that treatment.
papers.ssrn.com
<p><span>Towards Rigorous Economic Evidence for Clinical AI</span></p>
<p><span>Clinical artificial intelligence (AI) joins a long list of technologies that promise to improve healthcare, but lack the evidence that it leads to valu
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Colin Carlson @colincarlson.bsky.social · 23/09/2026
What's behind this tidal wave of epidemics? In the largest study ever conducted on emerging infectious diseases, we show that the popular explanation - "our relationship with nature is out of balance" - doesn't hold up. Out now in Nature, after half a decade of work: www.nature.com/articles/s41...
nature.com
The anthropogenic fingerprint on emerging infectious diseases - Nature
Emerging infectious disease&nbsp;outbreak risks&nbsp;are ubiquitous&nbsp;worldwide, and highest in landscapes where people, livestock and fragmented natural ecosystems coexist, but detection and data ...
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Ruben C. Arslan @ruben.the100.ci · 18/09/2026
This is very misleading. The effect size for treatment of .30 is a Cohen's d from RCTs, i.e. causal. The effect size for alliance is a Pearson's r of .30 (more like .6 expressed as d) and massively subject to confounding and reverse causation. So, this is not at all comparing like with like.
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ChrisThweet @christhweet.bsky.social · 15/09/2026
youtu.be/oaqVJ1WqfOI?...
youtu.be
TON VS HENRY - DEBAT OVER STIKSTOF - NPO comedy
YouTube video by NPO comedy
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Sovon Vogelonderzoek Nederland @sovonvogels.bsky.social · 14/09/2026
Eens in de zes jaar tellen we in oktober en november alle steltlopers in het binnenland, doe je mee? Lees hier meer: sovon.nl/actueel/nieu... Foto: Harvey van Diek
Bonte strandlopers en krombekstrandlopers
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Michèle Nuijten @michelenuijten.bsky.social · 10/09/2026
Will OSF make private files public automatically after mid Nov?? I was reading @dalmeet.bsky.social 's piece in Nature on the changes on OSF and was triggered by this sentence; am I misunderstanding something here? This can't be the case, can it? @briannosek.bsky.social
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Madhu Pai, MD, PhD @madhupai.bsky.social · 03/09/2026
As the number of observational studies continues to grow and with big data and AI use exploding, epidemiologists need better tools and best practices to produce reliable evidence and maintain public trust in science @natureportfolio.nature.com @gidmk.bsky.social www.nature.com/articles/s44...
nature.com
Seven ways to improve observational epidemiology and build trust - Nature Health
As the number of observational studies continues to grow and with big data and AI use exploding, epidemiologists need better tools and best practices to produce reliable evidence and maintain public t...
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Merijn Oudenampsen @merijnoudenampsen.org · 13/08/2026
We hoeven het wiel ook niet opnieuw uit te vinden. Er is al zoveel over geschreven. Hier Stuart Hall over kapitalisme en racisme.
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embar nitwitzer @amberwiznitzer.bsky.social · 08/08/2026
❤️
nrc.nl
Zodra ik buiten was, wilde ik terug naar binnen
Eetstoornis: NRC-redacteur Amber Wiznitzer werd als adolescent meerdere keren opgenomen vanwege een eetstoornis. Beter willen worden, naar buiten willen, was geen vanzelfsprekendheid, schrijft ze. Wat...
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Bahtiyar Yilmaz @bahtiyil.bsky.social · 03/08/2026
A stool transplant delivers billions of microbes into a sick gut. Almost none move in for good. We followed donor-recipient pairs from whole communities down to single nucleotides, and found the gut runs a ruthless strain-level filter. Out now in Cell Reports 🧵 www.cell.com/cell-reports...
cell.com
Strain-level ecological filtering governs microbial colonization of the human gut
Baertschi et al. demonstrate that microbiota transplantation functions as a selective ecological filter. Although donor species frequently appear, only specific lineages achieve stable strain integrat...
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Eiko Fried @eikofried.bsky.social · 30/07/2026
Prominent researchers in my field spent over 2 decades telling big stories about the relation between brain & mental health with very little robust data. This has led to really crazy stuff like this, impossible if we had not normalized this bizarre storytelling. www.theguardian.com/us-news/ng-i...
theguardian.com
A scientist says he can scan prisoners’ brains for signs of evil. Did his disputed science put a man on death row?
Kent Kiehl convinced the US legal system he can find violence in prisoners’ brains. His theories have been since used by defense lawyers – with grave consequences for prisoners
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Eiko Fried @eikofried.bsky.social · 30/07/2026
If you read one paper on the conceptualization of mental health problems this year, make it this one. Much of it aligns closely with my views—bummer it's not published elsewhere. Curious what you think and which clinical, research, or logical weak spots you see. doi.org/10.3389/fpsy...
doi.org
Frontiers | Problem-sustaining patterns: redesigning the concept of mental disorder
We propose the concept of a problem-sustaining pattern as a revision of the established concept of mental disorder. The proposed concept preserves valuable f...
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ErikKnuyt @erik008.bsky.social · 29/07/2026
#Klimaat
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MICE @amices.bsky.social · 23/07/2026
"mice: the only method here that carries imputation uncertainty into the model. Use it whenever the output is an estimate, a confidence interval, or a p-value, the typical medical or epidemiological analysis. Ten years on, it is still the right default for inference."
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George Davey Smith @mendelrandom.bsky.social · 22/07/2026
Does the (live) shingles vaccine protect against dementia? Fergus Hamilton and colleagues provide important evidence in a new preprint using hospital data from the whole of England in a regression discontinuity design from which we *don't* show evidence of a meaningful protective effect /cont
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Eiko Fried @eikofried.bsky.social · 13/07/2026
We're developing alternative ways to shorten questionnaires, given psychology's questionable focus on inter-item correlations. We are looking for datasets: - clinical (mental health) - contains diagnosis - contains long form - contains short form Steep requirements, but maybe someone knows smth?
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Nick DeVito @ndevito1.bsky.social · 29/06/2026
I challenge anyone go try and reproduce some random papers, even those based on open free public datasets, but without the code and/or a detailed description of how the data was obtained and processed, and not become militant about the necessity of code and complete data sharing at a minimum.
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De Vlinderstichting @vlinderstichting.eurosky.social · 22/06/2026
Handen af van de natuur. De Europese Commissie kijkt op dit moment opnieuw naar de belangrijkste natuurwetten van Europa. Juist nu is het belangrijk om te laten zien dat burgers sterke natuurbescherming steunen. Teken en deel de Hands Off Nature-petitie: handsoffnature.eu#take-action
handsoffnature.eu
Hands Off Nature – Defend Europe’s Forests, Rivers & Wildlife
Stop the dismantling of European environmental protections. Stand up for forests, wildlife, clean air, and safe water - our nature depends on it.
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Joris Marseille @jorismarseille.bsky.social · 16/06/2026
Een eerbetoon. (Kijk de video in het artikel.) #jeugdjournaal jeugdjournaal.nl/artikel/2618...
jeugdjournaal.nl
Man die stem van Ernie insprak, is overleden
Bekijk het hele bericht op Jeugdjournaal.nl
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Peter Tennant @pwgtennant.bsky.social · 12/05/2026
Does engaging with the arts help to slow the aging process? According to this new paper from Fancourt et al the answer is yes! Alas, the paper is actually unsuitable for such claims. Let’s examine by discussing how you'd establish whether arts engagement actually caused future health! 1/18 🧵
academic.oup.com
Does leisure activity matter for epigenetic ageing? Analyses of arts engagement and physical activity in the UK Household Longitudinal Study
AbstractBackground and Objectives. Over the past decade, ageing clocks have become widely adopted as important tools for understanding biological ageing an
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Eiko Fried @eikofried.bsky.social · 09/05/2026
Wimsatt: Perhaps, just perhaps, the best explanation of a phenomenon at a given level is to be found at the same level. Kendler: Noone would seek to explain hypertension at the level of quarks. A few of my favourite papers on this topic of absurd biological reductionism: 🧵
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Kunst en Landschap Noord Nederland @kunstenlandschap.bsky.social · 02/05/2026
De route van trekvogels zit vol dreigingen en gevaren. Lokale roofvogels en zware weersomstandigheden waren er altijd al. Daar zijn nieuwe bijgekomen: menselijke invloeden. Jean-Pierre Geelen volgt een lepelaar, een grutto en een rotgans, ahv hun zendergegevens. www.volkskrant.nl/kijkverder/v...
volkskrant.nl
Windmolens, stroomkabels, opwarming: hoe de mens de vogeltrek in de war schopt
De trek van vogels over duizenden kilometers was altijd al een waagstuk. Door menselijke invloeden – klimaatverandering, stroomkabels, windmolens – wordt die nog moeilijker. De barre tochten van een l...
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Crystal Lewis @cghlewis.bsky.social · 13/04/2026
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Nick Stevens @nick-stevens.com · 07/04/2026
Awesome image from Artemis. Big!
Earth behind the Moon
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Abdel Abdellaoui @dr-appie.bsky.social · 03/04/2026
We schreven voor Medisch Contact een artikel over polygene embryoselectie 🧬👶🏽 Hierin leggen we uit wat deze technologie wel en niet kan, waarom de voorspellende waarde beperkt is, welke onbedoelde neveneffecten er kunnen zijn, en welke ethische en maatschappelijke vragen dit oproept.
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Cameron Blevins @cblevins.bsky.social · 03/04/2026
This is so, so well-articulated.
People call this friction "grunt work." Schwartz uses exactly that phrase, and he's right that LLMs can remove it. What he doesn't say, because he already has decades of hard-won intuition and doesn't need the grunt work anymore, is that for someone who doesn't yet have that intuition, the grunt work is the work. The boring parts and the important parts are tangled together in a way that you can't separate in advance. You don't know which afternoon of debugging was the one that taught you something fundamental about your data until three years later, when you're working on a completely different problem and the insight surfaces. Serendipity doesn't come from efficiency. It comes from spending time in the space where the problem lives, getting your hands dirty, making mistakes that nobody asked you to make and learning things nobody assigned you to learn.
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Jeroen Sondervan @jeroenson.bsky.social · 02/04/2026
Great move! @utrechtuniversity.bsky.social launches tool (for everyone to use) to assess vulnerabilities regarding digital autonomy. www.uu.nl/en/news/utre...
uu.nl
Utrecht University launches tool to assess vulnerability digital autonomy
We are concerned about our digital autonomy. That is why we are now identifying our digital vulnerabilities and dependencies. To this end, we have developed an assessment tool.
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Daniel Lakens @lakens.bsky.social · 26/03/2026
FAIR data and code is both the most boring part of Open Science, and the part that will most fundamentally change how science is done. This gap is regrettable, but understandable. Most scientists can't imagine what their science would be like if research outputs were FAIR.
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Eiko Fried @eikofried.bsky.social · 21/03/2026
Found a really nice Dutch grant for turning our WARN-D pipeline that forecasts depression onset for young adults into an actionable system for people at risk. Grant requires a Dutch tech partner, preferably with an existing app that can be adapted to ours needs. Any interest? Please get in touch.
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Laure Wynants @laurewynants.bsky.social · 18/03/2026
✨ New open-access book✨ I’ve seen how powerful prediction models can be, but also how often they fall short. We wrote a book, covering not just development, but also when models are needed, and how to ensure real-world impact. www.maastrichtuniversitypress.nl/cpm
maastrichtuniversitypress.nl
%%title%% %%sep%% Maastricht University Press
Open Access book by Luc Smits, Sander van Kuijk, and Laure Wynants: This open-access textbook offers a practical and comprehensive guide to developing, validating, and implementing clinical prediction...
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Eiko Fried @eikofried.bsky.social · 27/02/2026
Great new paper led by @bringmannlaura.bsky.social, highlight the need to collect qualitative data in ESM / EMA research. #PsychSciSky 🧪 www.nature.com/articles/s44...
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Jeremy Labrecque @jeremylabrecque.bsky.social · 05/03/2026
A very nice to initiative where you can post your DAG: opencausal.org And because they're machine readable, they're much easier to search.
opencausal.org
Open Causal (Beta)
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Enrique Bordes @comicarchitect.eurosky.social · 04/03/2026
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Ben Goldacre @bengoldacre.bsky.social · 23/02/2026
OpenSAFELY is open from today! Huge thanks to all who supported this vast collaboration: whole population GP data; in a productive platform; innovative privacy protections; unprecedented support from professions, privacy campaigners; &c Now it's over to users! www.bennett.ox.ac.uk/blog/2026/02...
bennett.ox.ac.uk
OpenSAFELY news: you can apply to do non-COVID research, from today! | Bennett Institute for Applied Data Science
We are delighted to announce that - from today - you can submit applications to the OpenSAFELY service for non-COVID-19 studies.
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Kevin Mitchell @wiringthebrain.bsky.social · 21/02/2026
I'm SO tired of people looking for "the neuroscience of X" (meaning uninformative neuroimaging pictures) when *the psychology of X* is right there, doing a perfectly good job...
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Eiko Fried @eikofried.bsky.social · 07/01/2026
After 5 years of data collection, our WARN-D machine learning competition to forecast depression onset is now LIVE! We hope many of you will participate—we have incredibly rich data. If you share a single thing of my lab this year, please make it this competition. eiko-fried.com/warn-d-machi...
eiko-fried.com
WARN-D machine learning competition is live » Eiko Fried
If you share one single thing of our team in 2026—on social media or per email with your colleagues—please let it be this machine learning competition. It was half a decade of work to get here, especi...
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Jan Vanhove @janhove.bsky.social · 15/12/2025
A recent study purports to have found that multilingualism protects against accelerated ageing. I've taken a closer look at it, and it doesn't look good. New blog post: "Does multilingualism really protect against accelerated ageing? Some critical comments" janhove.github.io/posts/2025-1...
Positive trend between monolingualism and accelerated ageing.Negative trend between per capita GDP and accelerated ageing.
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Ben Van Calster @benvancalster.bsky.social · 13/12/2025
Our guidance regarding performance measures for medical AI models is finally out! - Stop bashing AUROC, although it does not settle things - Calibration and clinical utility are key - Show risk distributions - Classification statistics (e.g. F1) are improper www.thelancet.com/journals/lan...
thelancet.com
Evaluation of performance measures in predictive artificial intelligence models to support medical decisions: overview and guidance
Numerous measures have been proposed to illustrate the performance of predictive artificial intelligence (AI) models. Selecting appropriate performance measures is essential for predictive AI models i...
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Jeroen Trommelen @jeroentrommelen.bsky.social · 10/12/2025
Bluesky bestaat uit aardige mensen, dus: Het gezin van één van onze kinderen vertrekt voor onbepaalde tijd naar Spanje en ze verhuren hun woning (woon/keuken/twee sl.kamers/ tuintje/berging) in centrum Zaandam voor € 1250 excl. g/w/l. Minstens 3 mnd maar in overleg ook langer. Stuur direct message.
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Thijs Kuiken @thijskuiken.bsky.social · 05/12/2025
Vanuit een “One Health” perspectief geeft hoog-pathogene vogelgriep momenteel grote zorgen op drie gebieden: 1. Bij wilde dieren: die zorg is bewaarheid, met sterfte van duizenden kraanvogels in West-Europa in Duitsland, Frankrijk en Spanje in de afgelopen weken. www.natuurpunt.be/nieuws/vogel...
natuurpunt.be
Vogelgriep teistert kraanvogelpopulatie
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Julia M. Rohrer @dingdingpeng.the100.ci · 03/12/2025
1. Transparency is necessary for credibility 2. Transparency is hard to change 3. Require transparency* 4. Transparency is not magic 5. Journals are part of problem 6. Expect more from journals 7. Peer review is not magic 8. A crisis can look a lot like „normal“ science 9. Meta-analysis is not magic
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Ben Goldacre @bengoldacre.bsky.social · 26/11/2025
If you'd like to learn more about how OpenSAFELY works - and how we solved the privacy and efficiency challenges, to make national GP data securely accessible - here's a 5 minute video! www.youtube.com/watch?v=GRjR...
youtube.com
OpenSAFELY in a nutshell
YouTube video by Bennett Institute for Applied Data Science
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Cell Press @cellpress.bsky.social · 13/11/2025
The link between the gut #microbiome and autism is not backed by science, researchers say. Read the full opinion piece in @cp-neuron.bsky.social: spkl.io/63322AbxpA @wiringthebrain.bsky.social, @statsepi.bsky.social, & @deevybee.bsky.social
First page of Opinion piece: "Conceptual and methodological flaws undermine claims of a link between the gut microbiome and autism"
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Open Causal @opencausal.org · 13/11/2025
opencausal.org is online! Open Causal is an open platform to share, discuss and reuse causal graphs. Join now as a beta user, help shaping the future of causal graphs!
opencausal.org
Open Causal (Beta)
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Franciska de Vries 🟥 @frantecol.bsky.social · 27/09/2025
Vandaag staat mijn visie als hypothetische minister van Landbouw, Natuur, en Stikstof in dit prachtige artikel in @volkskrant.nl Dat stuk is natuurlijk erg kort en simpel, daarom hier een 🧵 van mijn hoofdpunten met wat meer onderbouwing! www.volkskrant.nl/kijkverder/v...
volkskrant.nl
Analyse Wonen, stikstof, migratie: deze wetenschappers weten wél hoe je dat oplost
Hoe zouden wetenschappelijke experts omgaan met de vele uitdagingen waarvoor Nederland staat? De uitkomsten zijn opvallend eenduidig – en hoopgevend.
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Femke Halsema @femkehalsema.bsky.social · 22/09/2025
Gisteren was ik bij de prachtige en actuele Herzberglezing van @sheilas.bsky.social. Neem er even de tijd voor … www.trouw.nl/verdieping/m...
trouw.nl
Mag je de democratie verdedigen met niet-democratische middelen, en zo ja, waar vecht je dan nog voor?
Abel Herzberg heeft indringend geschreven over de rollen die mensen aannemen onder de extreemste omstandigheden. Van toen naar nu is een grote sprong in de tijd, en tegelijk helemaal niet zo groot.
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