Definitions for Incidenceˈɪn sɪ dəns
This page provides all possible meanings and translations of the word Incidence
incidence, relative incidence(noun)
the relative frequency of occurrence of something
the striking of a light beam on a surface
"he measured the angle of incidence of the reflected light"
The act of something happening; occurrence
The extent, or the relative frequency of something happening
The striking of radiation or a projectile upon a surface
A measure of the risk that a person develops a new condition within a specified period of time, usually a year.
a falling on or upon; an incident; an event
the direction in which a body, or a ray of light or heat, falls on any surface
Incidence is a measure of the risk of developing some new condition within a specified period of time. Although sometimes loosely expressed simply as the number of new cases during some time period, it is better expressed as a proportion or a rate with a denominator. Incidence proportion is the number of new cases within a specified time period divided by the size of the population initially at risk. For example, if a population initially contains 1,000 non-diseased persons and 28 develop a condition over two years of observation, the incidence proportion is 28 cases per 1,000 persons, i.e. 2.8%.
U.S. National Library of Medicine
The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.
British National Corpus
Rank popularity for the word 'Incidence' in Nouns Frequency: #2031
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