Glossary // Glossary term Technical
Randomized controlled trial
A study in which participants are allocated at random to an intervention or a comparison condition, so that differences in outcome can be attributed to the intervention with less risk of confounding. Its credibility also depends on allocation concealment, blinding where possible, adequate sample size, low attrition and pre-specified outcomes. Well-conducted trials support causal conclusions for the studied population and setting, which may differ from everyday conditions. Every public claim on this site with its type, evidence level, confidence, sources and review date, and an appraisal of each reference. How claims are graded, how art is kept apart from evidence, and how to report a problem. How one could reason about recording a catharsis-like change of state: signals, features, inference and context, baselines, self-report, error costs and ethics, and why every step stays uncertain. Nothing on this site measures anyone.Where the site uses it