Buck(noun) the male of deer, especially fallow deer and antelopes, or of goats, sheep, hares, and rabbits. Buck(noun) a gay, dashing young fellow; a fop; a dandy. Buck(noun) a male Indian or negro. Buck(verb) to copulate, as bucks and does.
The idea. The idea for a clinical research study â also known as a clinical trial â often originates in the laboratory. After researchers test new therapies or procedures in the laboratory and in animal studies, the most promising experimental treatments are moved into clinical trials, which are conducted in phases.
However, rare outcomes, such as lung cancer, are generally not studied with the use of a cohort study, but are rather studied with the use of a case-control study. Shorter term studies are commonly used in medical research as a form of clinical trial, or means to test a particular hypothesis of clinical importance.