Glossary

Clinical trial glossary

Clinical trial registries often use technical language. This glossary gives simple definitions to help you read study pages without replacing the explanation of a health professional or research team.

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Clinical trial
A research study involving participants to evaluate an intervention, monitoring method, tool, or care approach.
Randomized
Participants are assigned to study groups using a random method defined by the study protocol.
Placebo
A comparison substance or intervention used to help evaluate what is being studied. The consent process should explain the details.
Double blind
A study design where neither the participant nor some members of the research team know which group receives which intervention during a set period.
Informed consent
The process where the research team explains the study, requirements, possible risks, participant rights, and withdrawal options.
Outcome measure
A measurement used to analyze what the study is trying to observe, such as a score, symptom change, or safety data.
Sponsor
The organization responsible for starting, managing, or funding the study.
Investigator
The professional or research team running the study at a study site.
FAQ

Common questions

Does this glossary replace official study documents?

No. It helps explain common terms. Official documents and the research team remain the reference.

Why do clinical trials use technical language?

Protocols need precise language for research, safety, and regulators. HopeStage helps make those terms easier to understand.