clinical-trials
2 free lessons tagged clinical-trials across Science. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.
Reading medical evidence: effect sizes, confidence, and the hierarchy
How to read a clinical trial result with discipline — the difference between absolute and relative risk reduction, what number-needed-to-treat captures, what confidence intervals actually mean, the hierarchy of evidence quality, and why statistical significance is not the same as clinical importance.
From bench to bedside: clinical trials and approval
The phased structure of drug development from preclinical work through phase IV surveillance, what each phase actually establishes, the 90% attrition rate and where it lives, the difference between surrogate and hard clinical endpoints, and what regulatory approval pathways guarantee.