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Effect Measures
Everything on Aqrab tagged Effect Measures — grouped into one landing page so readers can go deeper by problem family instead of bouncing around the archive blind.
Causal InferenceClinical EpidemiologyEffect Measures
Noncollapsibility of Odds Ratios: Why Adjustment Can Change the Number Even When Confounding Did Not
A practical guide to noncollapsibility of odds ratios for clinical researchers. Covers why crude and adjusted odds ratios can differ without confounding, when logistic regression invites over-interpretation, and what reviewers should demand instead.
2026-05-13·16 min read
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