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Disease Prevalence RateAka: Prevalence

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  1. Definition
    1. Number of current cases per population at risk
      1. Old: Persistent active disease contracted previously
      2. New: Onset of active disease
    2. Point prevalence
      1. Prevalence at a specific point in time
    3. Period prevalence
      1. Prevalence over a given time interval
  2. Usage
    1. Measure amount of illness in the community
    2. Determine health care needs of the community
  3. Contributing factors
    1. Disease Incidence Rate
    2. Illness Duration
  4. References
    1. Hennekens (1987) Epidemiology Medicine, p.54-98

Statistical Prevalence (C0033105)

Definition (MSH)The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time.
Definition (NCI)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.
ConceptsQuantitative Concept (T081)
EnglishPrevalence, Prevalences, Statistical Prevalence
CreditsDerived from the NIH UMLS (Unified Medical Language System)



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