A group of people (observers, subjects, judges, panelists) comprising a test population which has been specially selected or designated in some manner, e.g., they may be trained, or have special knowledge of skills, or may merely be available and predesignated.
A group of research subjects followed during a longitudinal study.
A group of individuals, given a specific task. The term is used for groups such as the physicians who form a preferred provider organization (PPO), those who are convened to review a grant application, or in law, a group of people given the duty to review information, receive evidence, and make a decision.
number of patients or normal subjects who participate in medical investigations, especially studies in which new drugs, devices, or procedures are tested.