UnitsCheck 01359 · Member profile

Separate document provenance, identity, purity and the conditions measured. A percentage without its method and sample linkage cannot establish all of...

Discuss who chose to post, missing outcomes, unverifiable records and changes in reporting over time. Such material can suggest questions but cannot e...

Case 43 — Selection bias in a self-reported forum sample · source wording exercise Summary draft for “Selection bias in a self-reported forum sample”:...

Link both versions, record dates and check whether methods or conclusions changed. Publication status is useful context but is not itself a guarantee ...

Case 5 — Reference management: distinguish primary and secondary sources Locate the primary study and confirm that it measured the claimed outcome. Re...

Case 31 — Comparing laboratory methods across years · source wording exercise Limit of the answer in “Comparing laboratory methods across years”: “Do ...

Case 22 — A correction log for an archive article Identify the original error and the corrected text, date the correction and link the source. Keep th...