Summary
This is a methodological review and educational guide published in BMJ that explains Mendelian randomisation—a technique using genetic variants as natural experiments to establish causal links between modifiable risk factors and disease. The authors provide clinicians with a glossary, interpretive framework, and critical appraisal checklist to assess the validity and limitations of Mendelian randomisation studies in the published literature.
UK applicability
This guidance is directly applicable to UK clinicians and researchers interpreting Mendelian randomisation evidence, particularly relevant to UK biobank studies and GWAS research conducted in British populations. The methodological framework will support evidence-based appraisal of causal claims in UK clinical practice and policy.
Key measures
Methodological criteria for evaluating Mendelian randomisation study quality; checklist and glossary of key concepts
Outcomes reported
The paper provides guidance on interpreting and critically appraising Mendelian randomisation studies, which use genetic variants as instrumental variables to infer causal relationships between risk factors and disease outcomes.
Topic tags
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