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Prevalence: Indicator in Epidemiology
The term prevalence comes from the Latin word praevalere: to prevail over. Prevalence is an indicator of epidemiology to characterize the extent or proportion of disease or certain condition (all stages, the new ones and the existing) in a particular group (population). Prevalence is especially useful for describing the extent of long lasting diseases within a population.
Number of individuals in the studied population, that at a given short time period have experienced a disease or certain condition, usually given per 1000 or 100,000 persons.
Number of individuals in the studied population, that at some point of the defined (long) time period have experienced a disease or certain condition. Examples are:
- lifetime prevalence, usually given as a percentage.
- 12-month prevalence
- 30-days prevalence
Number of individuals who have experienced a disease or certain condition at some time in proportion to the number of people tested.
See also incidence.
Index: 1–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Deutsche Version: Prävalenz