Who can participate in a clinical trial?

Every clinical trial has specific criteria related to the type of participants that are needed for the study. These criteria exist to ensure that good statistical data can be collected for the study to achieve its purpose. Additionally, in order to ensure that no undue risk or coercion is placed upon study volunteers, certain populations are considered special populations that must receive a higher degree of safety and ethical oversight. These populations include children/minors, pregnant women, indigents, prisoners, and other vulnerable populations.