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Sample size Number of participants needed in a trial to have sufficient statistical power to ensure that the results are accurate.
See also: www.eupati.eu/glossary/sample-size


Sequential design Statistical analysis where the sample size is not fixed in advance. Instead, data is evaluated as it is collected, and further sampling is stopped in accordance with a pre-defined stopping rule as soon as significant results are observed.


Simulation Modelling of random events, such that simulated outcomes closely match real-world outcomes. By observing simulated outcomes, researchers gain insight on the real world.


Stakeholder Person who has an interest in research or healthcare. Stakeholders can be patients, healthcare providers, researchers, policy makers, pharmaceutical companies, insurance companies etc.


Standard of evidence Criteria that must be met for interventions to be judged tested and efficacious or tested and effective.