MRCT – Number of known cases or events in a group. https://mrctcenter.org/glossaryterm/prevalence/
CDISC-Gloss – The number of existing cases of disease or injury in a defined population at a given point in time. NOTE: The relation between incidence and prevalence varies among diseases. There may be low incidence and a high prevalence – as for diabetes – or a high incidence and a low prevalence – as for the common cold. [After Basic Epidemiology, R. Bonita and others, WHO 2006; After Principles of Epidemiology in Public Health Practice, Third Edition. An Introduction to Applied Epidemiology and Biostatistics, Lesson 3: Measures of Risk, CDC 2012]. Compare to incidence. See also morbidity rate, morbidity, mortality, incidence rate.