Overview
A clinical trial is a research experiment that tests medical or behavioral procedures in humans to measure effectiveness and detect risks.
Clinical trials in modern scientific institutions generally follow four phases:
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An investigation in a small group of people, typically less than 100, to scope out the ranges for safe dosages and document side effects to look at.
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A larger trial on 100-300 people to begin tracking treatment effectiveness.
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A trial with hundreds or thousands of patients to obtain coverage across multiple regions and monitor side effects in a diverse selection of people
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Monitoring long-term safety and effects across a population after approval has been granted