{"code":"C17010","name":"Prevalence","terminology":"ncit","version":"26.09d","conceptStatus":"DEFAULT","leaf":false,"active":true,"synonyms":[{"name":"prevalence","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"CDISC-GLOSS"},{"name":"PREVALENCE","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"CDISC"},{"name":"prevalence","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"MRCT-Ctr"},{"name":"Prevalence","termType":"PT","type":"FULL_SYN","typeCode":"P90","source":"NCI"},{"name":"Prevalence","type":"Preferred_Name","typeCode":"P108"}],"definitions":[{"definition":"Number of known cases or events in a group. (https://mrctcenter.org/glossaryterm/prevalence/)","code":"P325","type":"ALT_DEFINITION","source":"MRCT-Ctr"},{"definition":"The number of the 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.","code":"P325","type":"ALT_DEFINITION","source":"CDISC-GLOSS"},{"definition":"The proportion of persons in a population who have a particular disease or attribute at a specified point in time or over a specified period of time. (CDC)","code":"P325","type":"ALT_DEFINITION","source":"CDISC"},{"definition":"The ratio (for a given time period) of the number of occurrences of a disease or event to the number of units at risk in the population.","code":"P97","type":"DEFINITION","source":"NCI"}],"properties":[{"code":"P322","type":"Contributing_Source","value":"CDISC"},{"code":"P322","type":"Contributing_Source","value":"CDISC-GLOSS"},{"code":"P322","type":"Contributing_Source","value":"MRCT-Ctr"},{"code":"P366","type":"Legacy Concept Name","value":"Prevalence"},{"code":"P106","type":"Semantic_Type","value":"Quantitative Concept"},{"code":"P207","type":"UMLS_CUI","value":"C0033105"}]}