Archives: Glossary Terms

The likelihood or chance that something might happen.

A study to test a treatment in the lab or in animals before testing it in people.

Number of known cases or events in a group.

A study measure that is used to answer the main research question.

An illness getting worse over time.

When participants can still receive a study treatment after their participation has ended.

A test result that shows a person has what was tested for.

A research study that tests and compares two or more study treatments for a disease or condition, with study treatment groups being added or removed during the study period.

Something that looks like the treatment being studied, but doesn’t contain any medicine 

A study with two or more groups where one group is given a placebo.