Overview

HEALTH GUIDE REFERENCE FROM A.D.A.M

Definition

Incidence is the number of new cases of a condition, symptom, death, or injury that arise during a specific period of time, such as in a year. It is often expressed as a percentage of a population (for example, 25% of Americans were diagnosed with the flu in 2002).

Incidence shows the likelihood that a person in that population will be affected by the condition.

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