Enter words or phrases, separated by commas, in any search box and click on any of the check boxes to narrow your search. It is not necessary to fill in all the boxes, only those that are needed for your search.
You may search any of the following:
Disease or Condition
Use this box to specify health problems or conditions being studied.
Examples:
- lupus
- heart attack
- leukemia
Experimental Treatment
Use this box to specify drugs, devices, procedures, or vaccines used in a trial.
Examples:
- clofibrate
- cyclosporine
- vitamin e
Additional Terms
Enter any other terms that you wish to add to your search.
Examples:
- pilot study
- veterans affairs medical center
- constance benson
- nhlbi
Age Group
Studies may be designed for participants of particular ages:
- Children (birth-17)
- Adults (18-65)
- Senior (66+)
Click the check box to the left of each age group that you wish to include in your search. If you do not check any boxes you will retrieve studies for all age groups.
Study Phase
Most clinical trials are designated as phase I, II, or III, based on the type of questions that study is seeking to answer:
- In Phase I clinical trials, researchers test a new drug or treatment in a small group of people (20-80) for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
- In Phase II clinical trials, the study drug or treatment is given to a larger group of people (100-300) to see if it is effective and to further evaluate its safety.
- In Phase III studies, the study drug or treatment is given to large groups of people (1,000-3,000) to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
These phases are defined by the Food and Drug Administration in the Code of Federal Regulations.
Click the check box to the left of each study phase that you wish to include in your search. Select one or more study phases. If you do not select a specific phase, trials in any phase that match your other search terms will be retrieved.
Supported By
Studies are sponsored or supported by organizations responsible for providing financial and other types of support. All of the sponsors in the database have been assigned to one of the following organization types:
- National Institutes of Health (NIH)
- Other Federal Agency (e.g., the Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC))
- Industry (e.g., pharmaceutical companies)
- University/Organization (e.g., community-based organizations)
Click on any of the boxes to limit the search to certain types of sponsors. If no boxes are checked, all support categories will be included.
Study ID Number
Each trial is assigned one or more identification numbers by the institute, agency, or organization sponsoring the trial. Use this box to enter any part or all of a Study ID.
Examples:
- NCT00001789
- 97-h-0197
- ia0006
- actg 076