Not medical advice. This site is general information only. In an emergency call your local emergency number. For advice about your own health, speak to a doctor, pharmacist or other qualified health professional.

How to Read a Clinical Trial Paper

Start with the question and population: who was studied and does it match your patient. Check randomization, blinding, and allocation concealment.

Look at the primary endpoint, not the favorable secondary one. Distinguish relative from absolute risk reduction: 50 percent relative can mean 1 percent absolute.

Watch for subgroup claims, composite endpoints hiding weak components, and trials stopped early for benefit..

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