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Correction note for “Exploratory subgroup analysis: keep the label visible”: retain the wording beginning “State whether it was prespecified and how…”...

Summary draft for “Exploratory subgroup analysis: keep the label visible”: the answer addresses “Treat exploratory findings as hypothesis-generating r...

Each entry should retain the date, old text, corrected text, reason and source reference. For a publisher notice, link the notice as well as the origi...

Identify population, design, comparator, outcome definitions and follow-up. Assess whether the conclusion extends beyond the measurements and note wha...

Case 16 — Correlation in a small observational dataset Limit of the answer in “Correlation in a small observational dataset”: “Report sample size, pot...

Case 20 — Exploratory subgroup analysis: keep the label visible State whether it was prespecified and how many comparisons were considered. Treat expl...

Case 18 — Preprint versus peer-reviewed publication A cited preprint has a later published version. How should an archive entry handle the relationshi...

Case 8 — Correlation in a small observational dataset Clarification for “Correlation in a small observational dataset”: the point beginning “Report sa...

Report sample size, potential confounders and measurement uncertainty. Association does not identify direction or causation, and exploratory results n...

Case 12 — Two laboratories, two percentages: are they measuring the same thing? The summary should say that different quantities were initially mixed ...

Method note for “Retractions and expressions of concern in an archive”: use “Link the publisher notice beside the citation, record its date and…” as a...

Case 21 — Certificate of analysis: which claim does each measurement support? A reagent dossier contains a summary purity percentage but not the metho...