20 categories

Evidence

Published evidence, read closely. Trial digests, journal club, meta-analyses, preprints, and structured critique.

148 topics7,629 posts42 solved Moderators: s.leclerc, dr_okonkwo About this category

Trials 33 Journal club 47 Meta-analyses 24 Preprints 20 Study critique 24

148 topics · page 1 of 5

Topic	Participants	Replies	Views	Activity
Journal club: LEADER as the historical anchor Evidence › Journal club estimand number needed to treat journal club effect size Pinned Journal club: LEADER as the historical anchor Writing it up because I had to work it out twice and would rather nobody else did. What changes if the standard account of LEADER is wrong? I ask because I have…	+103	110	8.1k	2h
About the Preprints category Evidence › Preprints preprint risk of bias needs a source Pinned Wiki Unrefereed work, clearly labelled as such, with the usual caveats stated once and taken seriously. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded…	+3	7	14k	3mo
Citing a preprint in a maintained document: our rule and its reasoning Evidence › Preprints risk of bias effect size needs a source preprint Pinned On the subject in the title: Citing a preprint in a maintained document: our rule and its reasoning Working notes rather than a conclusion. A preprint question rather than a question about the finding in it.…		2	467	4mo
Critiquing an observational claim about a class effect — one year on Evidence › Study critique observational data disputed risk of bias Pinned Critiquing an observational claim about a class effect — one year on — setting out what I have, and where I think it stops being reliable. I was wrong about Critiquing an observational claim in a thread last…	+5	9	3.2k	8mo
About the Trials category Evidence › Trials randomised trial estimand intention to treat Pinned Wiki Individual randomised trials: design, population, endpoints, results, and limitations. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with its…	+6	10	27k	12mo
About the Meta-analyses category Evidence › Meta-analyses meta-analysis heterogeneity publication bias Pinned Wiki Pooled estimates, heterogeneity, publication bias, and when pooling was a mistake. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with its author…		4	15k	13mo
Comparators chosen for regulatory reasons rather than clinical ones Evidence › Trials surrogate endpoints open label estimand randomised trial Pinned Closed On the subject in the title: Comparators chosen for regulatory reasons rather than clinical ones Working notes rather than a conclusion. An honest uncertainty about comparators chosen for regulatory reasons…		2	27k	14mo
About the Study critique category Evidence › Study critique risk of bias confounding observational data Pinned Wiki Structured criticism of a specific published study. Criticise the method, not the author. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with its…		4	114	16mo
About the Journal club category Evidence › Journal club journal club randomised trial estimand Pinned Wiki Our recurring session. One named paper per topic, methods first, conclusions last. Everyone reads before posting. This post is a community wiki: any member at trust level 3 or above can edit it, and every…	+2	6	12k	16mo
Second pass at: When a network meta-analysis is defensible and when it is not Evidence › Meta-analyses heterogeneity meta-analysis effect size publication bias Solved Pinned Posting this under the heading it deserves: Second pass at: When a network meta-analysis is defensible and when it is not Everything below is what sits behind that. Posting a small dataset on network…		2	2.8k	21mo
Journal club: indirect comparison between two programmes, defended and attacked Evidence › Journal club journal club randomised trial number needed to treat risk of bias Journal club: indirect comparison between two programmes, defended and attacked Writing it up because I had to work it out twice and would rather nobody else did. Trying to work out what would count as…	+122	131	5.2k	just now
When a network meta-analysis is defensible and when it is not Evidence › Meta-analyses effect size heterogeneity publication bias Solved When a network meta-analysis is defensible and when it is not I have a specific reason for asking rather than idle curiosity, and the context is below. Network meta-analysis, from the point of view of someone…		2	27k	4h
Journal club: STEP 1 and the treatment-policy estimand Evidence › Journal club journal club randomised trial number needed to treat risk of bias Journal club: STEP 1 and the treatment-policy estimand Writing it up because I had to work it out twice and would rather nobody else did. Session topic: STEP 1 ( N Engl J Med , 2021). Please read it before…		3	11k	9h
What a statistical analysis plan adds that the paper does not Evidence › Trials open label discontinuation & dropout randomised trial surrogate endpoints Solved What a statistical analysis plan adds that the paper does not — that is the question, and I have not found it answered plainly anywhere I have looked. Statistical analysis plan, and specifically the version…		2	6.6k	10h
Second pass at: Reading a trial's population section before its results Evidence › Trials open label intention to treat estimand surrogate endpoints Solved Second pass at: Reading a trial's population section before its results Writing it up because I had to work it out twice and would rather nobody else did. Reading STEP 1 ( N Engl J Med , 2021) for the…		4	9.5k	10h
Primary endpoint hierarchies and why order matters — one year on Evidence › Trials surrogate endpoints discontinuation & dropout estimand randomised trial Solved On the subject in the title: Primary endpoint hierarchies and why order matters — one year on Working notes rather than a conclusion. A follow-up question about Primary endpoint hierarchies that I did not…	+56	61	37k	11h
Composite endpoints and the component doing the work Evidence › Trials randomised trial surrogate endpoints open label discontinuation & dropout Solved Under review Composite endpoints and the component doing the work Writing it up because I had to work it out twice and would rather nobody else did. Collecting what is known about composite endpoints in one place, because…	+3	7	33k	13h
Journal club: STEP 8 and the fairness of the comparator dose — a second dataset Evidence › Journal club risk of bias journal club effect size estimand Posting this under the heading it deserves: Journal club: STEP 8 and the fairness of the comparator dose — a second dataset Everything below is what sits behind that. Posting a small dataset on STEP 8. It is…	+18	22	656	13h
Journal club: semaglutide in MASH, and surrogate endpoints Evidence › Journal club randomised trial journal club effect size risk of bias Posting this under the heading it deserves: Journal club: semaglutide in MASH, and surrogate endpoints Everything below is what sits behind that. Working notes on semaglutide in MASH rather than a conclusion.…	+24	28	17k	15h
Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Evidence › Journal club randomised trial risk of bias effect size journal club Asking directly, because I could not find a straight answer: Journal club: STEP 1 and the treatment-policy estimand — does this still hold? Working notes on STEP 1 rather than a conclusion. I would rather…	+70	76	4.8k	15h
A structured critique template this community uses — a second dataset Evidence › Study critique observational data effect size confounding Solved On the subject in the title: A structured critique template this community uses — a second dataset Working notes rather than a conclusion. Posting a small dataset on structured critique template. It is mine,…	+47	51	16k	15h
A critique that turned out to be unfair, retracted by its author Evidence › Study critique confounding risk of bias effect size observational data Wiki Posting this under the heading it deserves: A critique that turned out to be unfair, retracted by its author Everything below is what sits behind that. Critique, and specifically the version of it that the…	+34	38	20k	17h
Coming back to: A structured critique template this community uses Evidence › Study critique confounding risk of bias disputed observational data Posting this under the heading it deserves: A structured critique template this community uses Everything below is what sits behind that. Reading back through what has been written here about structured…	+63	69	17k	18h
Revisiting: What pooling buys you and what it destroys Evidence › Meta-analyses heterogeneity effect size publication bias Solved On the subject in the title: Revisiting: What pooling buys you and what it destroys Working notes rather than a conclusion. Pooling buys — I have the observation and I do not trust my interpretation of it, so…	+97	107	4k	19h
Journal club: the CagriSema phase 2 combination paper Evidence › Journal club randomised trial estimand effect size On the subject in the title: Journal club: the CagriSema phase 2 combination paper Working notes rather than a conclusion. CagriSema phase 2 combination paper — I have the observation and I do not trust my…		2	329	21h
Immortal time bias in a claims-database study — one year on Evidence › Study critique effect size risk of bias confounding Solved Posting this under the heading it deserves: Immortal time bias in a claims-database study — one year on Everything below is what sits behind that. I would like to disagree carefully with the settled view on…	+41	46	3.7k	22h
Journal club: what we got wrong in an earlier session Evidence › Journal club number needed to treat effect size randomised trial journal club On the subject in the title: Journal club: what we got wrong in an earlier session Working notes rather than a conclusion. Bringing a claim rather than a paper, because the claim is the thing circulating. The…	+114	125	2.5k	23h
Risk-of-bias tools and the judgement they conceal — does this still hold? Evidence › Meta-analyses heterogeneity risk of bias effect size publication bias Solved Risk-of-bias tools and the judgement they conceal — does this still hold? — that is the question, and I have not found it answered plainly anywhere I have looked. Asking about Risk-of-bias tools on behalf of…	+26	30	5.8k	23h
Pooling trials with different estimands Evidence › Meta-analyses publication bias risk of bias effect size meta-analysis Solved On the subject in the title: Pooling trials with different estimands Working notes rather than a conclusion. Asking about pooling trials with different estimands on behalf of the question I keep seeing asked…	+120	132	2.3k	1d
A structured critique template this community uses Evidence › Study critique observational data effect size risk of bias A structured critique template this community uses — setting out what I have, and where I think it stops being reliable. Structured critique template — I have the observation and I do not trust my…		2	18k	1d

Sponsored Sigma-Aldrich — certified reference materialsReference standards, analytical reagents and certified materials for method calibration. If you are validating a method, this is where the standard comes from.Reference standards →