UPCOMING SESSIONS in ET
Mon, May 11, 2026
10:00 – 11:00 PM UTC
Getting Your Meds Right: Small Details That Can Make a Big Difference Dr. Stacey Goodman Click To Register
UPCOMING SESSIONS in ET
Mon, May 11, 2026 · 10:00 – 11:00 PM UTC
Getting Your Meds Right: Small Details That Can Make a Big Difference
Dr. Stacey Goodman
Click To Register
View all sessions

Glossary of Common Site Terms

Published: Jan 30, 2020
Category
Patient Education
Key Information
Source
U.S. National Library of Medicine, ClinicalTrials.gov
Year
2020
summary/abstract
This glossary will help you understand words and phrases frequently used on ClinicalTrials.gov. Many of these words are also used by clinical researchers and others in the same or a similar manner. But the definitions below are provided to explain content on ClinicalTrials.gov only.

Accepts Healthy Volunteers

A type of eligibility criteria that indicates whether people who do not have the condition/disease being studied can participate in that clinical study.

Active Comparator arm

An arm type in which a group of participants receives an intervention/treatment considered to be effective (or active) by health care providers.

Adverse Event

An unfavorable change in the health of a participant, including abnormal laboratory findings, that happens during a clinical study or within a certain amount of time after the study has ended. This change may or may not be caused by the intervention/treatment being studied.


More on Clinical Trial Education:

Clinical Trials: Benefits, Risks, and Safetyexternal link, opens in a new tab
Learn About Clinical Studiesexternal link, opens in a new tab
Finding a Clinical Trialexternal link, opens in a new tab


Abstract Source
https://clinicaltrials.gov/ct2/about-studies/glossary

Tags