Prospective, nonrandomized, controlled trials; prospective
cohort studies; prospective case series; and cross-sectional studies. See (PDQ®) for more information.
cohort (KOH-hort)
A group of individuals who share a common trait, such as birth year. In medicine, a cohort is a group that is part of a clinical trial or study and is observed over a period of time.
Source: The National Cancer Institute's Dictionary of Cancer Terms
(http://www.cancer.gov/dictionary)prospective (pruh-SPEK-tiv)
In medicine, a study or clinical trial in which participants are identified and then followed forward in time.
Source: The National Cancer Institute's Dictionary of Cancer Terms
(http://www.cancer.gov/dictionary)
