II. Definition

  1. Number of new disease cases per population at risk
    1. High Incidence implies high disease occurrence
    2. Low Incidence implies low disease occurrence
  2. Measured over a given time interval

III. Usage

  1. Determine probability of developing a specific disease
  2. Used to detect etiologic factors

IV. References

  1. Hennekens (1987) Epidemiology Medicine, p.54-98

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