Still have questions?
Understanding clinical trials is important when making the decision to join one. Our FAQ section has answers to commonly asked questions and a glossary of words to know.
The ClinicalTrials.gov identifer is an identification number that the website ClinicalTrials.gov assigns to a trial when it is registered. The trial identifer number is in the format “NCTXXXXXXXX”. The trial is not registered until a trial identifer number is assigned.
The official title of a clinical trial. Sometimes a trial also has a short title written in language that is easier for the public to understand.
The main reason for the clinical trial. The main purpose types include treatment, prevention, diagnostic, quality of life (supportive care), screening, and others.
A clinical trial’s requirements (criteria) for people who want to join. Eligibility criteria consists of:
The research methods and strategies used in the clinical trial.
The phase of the clinical trial, which is a number 1 through 4. The phase is based on the trial’s goals, the number of participants, and other characteristics.
The start date is the actual date on which the first participant was enrolled in a clinical trial. The “estimated” start date is the date that the researchers think the trial will start.