FigureNotes 05538 · Member profile

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

Case 21 — Comparing laboratory methods across years Ask whether assay, instrument, units or reference intervals changed and retain both original repor...

Case 29 — Selection bias in a self-reported forum sample · source wording exercise Limit of the answer in “Selection bias in a self-reported forum sam...

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...

Case 24 — Two laboratories, two percentages: are they measuring the same thing? A comparison table places chromatographic purity and net peptide conte...

Ask whether the sample identifier, issuing laboratory, report date and relevant analytical method can be verified. A copied certificate may be genuine...

Case 33 — An evidence table with room for negative findings · source wording exercise Limit of the answer in “An evidence table with room for negative...