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Evidence · Preprints · continued

Citing a preprint in a maintained document: our rule and its reasoning — does this still hold? posts 91–116

This is a continuation of a long topic, addressed by post number rather than by page. Start at post 1 · go to the accepted answer.

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t.vargaTL22 Oct 2025 · edited#91

Always label it as a preprint in any discussion. A preprint is not a published trial and it is not settled knowledge. Use it for hypothesis generation and for understanding emerging evidence, not for drawing definitive conclusions.

1 like 10mo
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NardoneTL22 Oct 2025#92
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k.ogunleyeTL23 Oct 2025#93
s.kimani, post #21: Post #19 and I disagree about the size of the effect, not about the direction. Version numbers on a preprint server matter. Citing version one of something now on version four is citing a document that has been superseded by its own authors. Posting it because the silence on this was starting to look like agreement. Go to post

Agreed on all of that, and I have nothing to add to it.

18 likes in reply to #21 10mo
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a.kwiatkowskiTL2Member3 Oct 2025#94
ch.correia, post #42: This follows post #41 rather than contradicting it. What changes between preprint and publication: authors respond to reviewer comments, re-analyse data, correct errors found in peer review, and sometimes report different results from updated analyses. The published version is not the same as the preprint. It is one reading of the data… Go to post

On post #90 — agreed on the reasoning, with one qualification.

Where a preprint contradicts a published trial, the prior should favour the trial. Where it extends one, the preprint can be genuinely useful.

I would be glad to be shown a cleaner way of putting this.

0 likes in reply to #42 10mo
SC
s.chowdhuryTL3Regular3 Oct 2025#95

Author track record is a weak signal and it is a signal. A group that has published carefully for years is a different prior from an unknown one.

The right answer here may simply be that it has not been measured.

0 likes 10mo
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IRenaudinTL2Member3 Oct 2025#96

Coming back to post #94, because the follow-up matters more than the original answer.

Speaking only to Citing a preprint as I have actually seen it, rather than as it is usually described: the effect is real, it is smaller than the thread suggests, and the variance between people is larger than the effect.

4 likes 10mo
EB
e.bakkenTL23 Oct 2025#97
o.nyberg, post #32: If you cite a preprint in a maintained document here, the convention is to label it in the sentence and to note the check date. The document review will catch the update. Go to post

This follows post #96 rather than contradicting it.

Say it is a preprint in the first line rather than the last. Everything downstream depends on that status and readers arriving from search will not scroll for it.

12 likes in reply to #32 10mo
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methods_marginTL3Regular3 Oct 2025#98
b.brandt, post #54: The honest position on most preprints in this field is that they are interesting and provisional, and that saying both is not fence-sitting. The uncertainty is in the assumption, not in the calculation. Go to post

A preprint reporting a null result is more likely to stay a preprint, which biases the published literature and makes preprint servers more valuable rather than less.

25 likes in reply to #54 10mo
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h.ramosTL23 Oct 2025#99

Post #96 answers the question as asked. The question underneath it is different.

Two claims get bundled together under Citing a preprint and they need separating. The descriptive one — this is what was observed — is usually well supported. The causal one — this is why — usually is not.

Almost every disagreement in threads like this one dissolves once you say which of the two you are making.

7 likes 10mo
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CSagredoTL3Regular3 Oct 2025#100

Same experience here, different supplier, so it is at least not unique to one of them.

17 likes 10mo
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a.hartmannTL23 Oct 2025#101

This follows post #98 rather than contradicting it.

Reading a preprint properly means doing some of the reviewer's job: methods first, then whether the analysis matches the plan, then the conclusion.

The conclusion is tentative; the arithmetic underneath it is not.

0 likes 10mo
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buffer_marginTL3Regular3 Oct 2025#102

Check whether it was later published: searching for the preprint's first author and keywords in PubMed might find a published version. The published version is the stronger citation if it exists.

I would rather say I do not know than round it up to an answer.

5 likes 10mo
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m.agyemanTL23 Oct 2025#103

Citing a preprint is well covered in the tag pages, and the older discussions are better than the recent ones because they were argued out properly. Worth twenty minutes before adding to this one.

20 likes 10mo
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excursion_checkTL3Regular3 Oct 2025#104
m.agyeman, post #103: Citing a preprint is well covered in the tag pages, and the older discussions are better than the recent ones because they were argued out properly. Worth twenty minutes before adding to this one. Go to post

Noted, and I have changed what I was going to do on the strength of it.

0 likes in reply to #103 10mo
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t.abubakarTL23 Oct 2025#105

How to cite a preprint: author last name, first initial, et al. Title. Server name [preprint]. Posted date. Doi. Include the server name and note that it is a preprint.

The disagreement above is smaller than it looks once the terms are fixed.

0 likes 10mo
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v.krastevTL23 Oct 2025#106

Author track record is a weak signal and it is a signal. A group that has published carefully for years is a different prior from an unknown one.

That distinction has done more work for me than anything else in this category.

2 likes 10mo
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b.restrepoTL24 Oct 2025#107
k.ogunleye, post #93: Agreed on all of that, and I have nothing to add to it. Go to post

Narrowing post #106, because the general version has more than one answer.

If someone has run Citing a preprint properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet.

14 likes in reply to #93 10mo
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PSkarbekTL3Regular4 Oct 2025 · edited#108
j.falk, post #11: Do not build anything on a preprint that you would mind rebuilding: if the preprint later changes substantially in revision or shows different results when published, your reasoning based on the preprint needs to be revised. The number is defensible. The precision I gave it is not. Go to post

Everything in post #105 holds. The case it does not cover is the one I have.

A preprint that has been up for two years without appearing in a journal is telling you something, and it is not necessarily that the work is bad.

Nothing above should be read as advice about what anyone else should do.

28 likes in reply to #11 10mo
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t.tullochTL24 Oct 2025#109
i.broberg, post #58: Server repositories: medRxiv for medicine, bioRxiv for biology. Preprints on these servers are time-stamped and have DOIs even if they are later published elsewhere. Citing the preprint with its DOI is appropriate while noting it is unpublished. Go to post

Nothing to add on the substance. Thank you for taking the question at face value.

0 likes in reply to #58 10mo
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vial_deskTL3Regular4 Oct 2025#110

Peer review catches some things reliably — missing methods, unsupported conclusions, statistical mistakes of the obvious kind — and misses others routinely. Knowing which is which makes preprint reading easier.

0 likes 10mo
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a.jansenTL24 Oct 2025#111
n.haddad, post #22: How to cite a preprint: author last name, first initial, et al. Title. Server name [preprint]. Posted date. Doi. Include the server name and note that it is a preprint. Second-hand, so weight it accordingly. Go to post

Post #107 put the caveat in the right place and I want to underline it.

Building anything durable on a preprint means committing to rebuild it. That is a reasonable trade for a fast-moving question and it should be an explicit one.

A qualification I should have led with rather than closed on.

18 likes in reply to #22 10mo
MD
m.dalgaardTL3Regular4 Oct 2025#112
PSkarbek, post #108: Everything in post #105 holds. The case it does not cover is the one I have. A preprint that has been up for two years without appearing in a journal is telling you something, and it is not necessarily that the work is bad. Nothing above should be read as advice about what anyone else should do. Go to post

Where numbers change between preprint and published version, the changes are not random. They tend toward a smaller effect and a more carefully hedged claim.

The rule of thumb is fine; the edge cases are where it earns its keep.

7 likes in reply to #108 10mo
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e.adeyemiTL24 Oct 2025#113

What changes between preprint and publication: authors respond to reviewer comments, re-analyse data, correct errors found in peer review, and sometimes report different results from updated analyses. The published version is not the same as the preprint.

I am aware this is the third time this month I have made this point.

0 likes 10mo
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policy_readerTL2Regular4 Oct 2025#114

That is a cleaner way of putting what I was circling around.

0 likes 10mo
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no.silvaTL24 Oct 2025#115
g.verhoeven, post #34: Where I part company with post #32, and it is a narrow parting. The reason Citing a preprint is hard to answer is that the obvious measurement and the relevant quantity are not the same thing, and substituting one for the other is silent. Go to post

A preprint with the data and code attached is frequently more checkable than a published paper without them. Reviewed and reproducible are different properties.

25 likes in reply to #34 10mo
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i.rasmussenTL24 Oct 2025#116

Say it is a preprint in the first line rather than the last. Everything downstream depends on that status and readers arriving from search will not scroll for it.

11 likes 10mo

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