Erik van Zwet
@erik-van-zwet.bsky.social
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Statistician at the Leiden University Medical Center in the Netherlands.
I wrote something about z-statistics and the signal-to-noise ratio.
add a skeleton here at some point
about 1 month ago
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I wrote something about publication bias at
statmodeling.stat.columbia.edu/2025/11/14/t...
about 2 months ago
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Erik van Zwet
Andrew Gelman et al.
2 months ago
Even the easiest data requests can require some effort
statmodeling.stat.columbia.edu/2025/10/25/e...
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Even the easiest data requests can require some effort | Statistical Modeling, Causal Inference, and Social Science
https://statmodeling.stat.columbia.edu/2025/10/25/even-the-easiest-data-requests-can-require-some-effort/
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reposted by
Erik van Zwet
Frank Harrell
3 months ago
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
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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...
https://discourse.datamethods.org/t/when-and-why-not-to-worry-about-the-po-assumption/28473
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Livin' the Bayesian dream!
add a skeleton here at some point
7 months ago
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reposted by
Erik van Zwet
Demetri
10 months ago
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....
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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...
https://evidence.nejm.org/doi/full/10.1056/EVIDoa2300003
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We still writing up the paper, so all comments are more than welcome!
add a skeleton here at some point
10 months ago
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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....
11 months ago
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