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Case 27 — Two laboratories, two percentages: are they measuring the same thing? · source wording exercise Reader check for “Two laboratories, two perc...

Case 29 — Two laboratories, two percentages: are they measuring the same thing? · source wording exercise Reader check for “Two laboratories, two perc...

Case 35 — Reading an abstract without skipping the methods · source wording exercise Reader check for “Reading an abstract without skipping the method...

Include all prespecified outcomes where reported, null findings, exclusions and limitations. Separate the authors’ interpretation from the table’s dir...

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

Limit of the answer in “Selection bias in a self-reported forum sample”: “Discuss who chose to post, missing outcomes, unverifiable records…” is an ex...