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Erik van Zwet

@erik-van-zwet.bsky.social
135 followers 64 following 24 posts

Statistician at the Leiden University Medical Center in the Netherlands.

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Erik van Zwet @erik-van-zwet.bsky.social · 05/02/2026
Sorry to keep beating that dead horse, but it's never really dead! statmodeling.stat.columbia.edu/2009/05/24/h...
statmodeling.stat.columbia.edu
Handy statistical lexicon | Statistical Modeling, Causal Inference, and Social Science
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Erik van Zwet @erik-van-zwet.bsky.social · 10/01/2026
I wrote something about the z-curve method.
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Erik van Zwet @erik-van-zwet.bsky.social · 23/11/2025
I wrote something about z-statistics and the signal-to-noise ratio.
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Erik van Zwet @erik-van-zwet.bsky.social · 14/11/2025
I wrote something about publication bias at statmodeling.stat.columbia.edu/2025/11/14/t...
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Reposted by Erik van Zwet
Andrew Gelman et al. @statmodeling.bsky.social · 25/10/2025
Even the easiest data requests can require some effort statmodeling.stat.columbia.edu/2025/10/25/e...
statmodeling.stat.columbia.edu
Even the easiest data requests can require some effort | Statistical Modeling, Causal Inference, and Social Science
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Reposted by Erik van Zwet
Frank Harrell @f2harrell.bsky.social · 07/10/2025
Yongxi Long and colleagues have written an excellent post about when and when not to worry about the proportional odds assumption: discourse.datamethods.org/t/when-and-w... #StatsSky #EpiSky #Statistics #RStats
discourse.datamethods.org
When and why (not) to worry about the PO assumption
Aim We wrote an article (Long, Wiegers, Jacobs, Steyerberg, & Van Zwet, 2025) about the proportional odds (PO) assumption in the analysis of ordinal outcomes. we use various examples from neurological...
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Erik van Zwet @erik-van-zwet.bsky.social · 21/05/2025
Livin' the Bayesian dream!
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Reposted by Erik van Zwet
Demetri @phdemetri.bsky.social · 17/03/2025
Speaking of the null hypothesis, here is a much better treatment of the "how many experiments are exaggerating the effect" question. evidence.nejm.org/doi/full/10....
evidence.nejm.org
A New Look at P Values for Randomized Clinical Trials
We have examined the primary efficacy results of 23,551 randomized clinical trials from the Cochrane Database of Systematic Reviews. We estimate that the great majority of trials have much lower st...
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Erik van Zwet @erik-van-zwet.bsky.social · 02/03/2025
We still writing up the paper, so all comments are more than welcome!
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Erik van Zwet @erik-van-zwet.bsky.social · 19/02/2025
It has been claimed that there is no such thing as a validated prediction model. We provide empirical evidence for that claim in our new paper here: onlinelibrary.wiley.com/doi/full/10....
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