Disease Prevalence Rate


Disease Prevalence Rate, Prevalence

  • 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
  • Usage
  1. Measure amount of illness in the community
  2. Determine health care needs of the community
  • Contributing factors
  1. Disease Incidence Rate
  2. Illness Duration
  • References
  1. Hennekens (1987) Epidemiology Medicine, p.54-98