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Case 50 — Correlation in a small observational dataset · comparison exercise Method note for “Correlation in a small observational dataset”: use “Repo...

Case 14 — Correlation in a small observational dataset Limit of the answer in “Correlation in a small observational dataset”: “Report sample size, pot...

Method note for “Assay-specific reference ranges: what must travel with a result?”: use “Retain units, method, laboratory interval and collection cont...

Limit of the answer in “Correlation in a small observational dataset”: “Association does not identify direction or causation, and…” is an excerpt from...

Correction note for “Two laboratories, two percentages: are they measuring the same thing?”: retain the wording beginning “Create separate columns for...

State the study design and what was actually measured before discussing the proposed mechanism. Keep speculation explicitly labelled and avoid transla...

Use a comparison-status column: directly comparable, comparable with stated qualifications, or not established. Explain the reason for each label.