incidence incidence
Number of new cases or events during a period of time.
Example of incidence in a sentence
The incidence rate tells us how many new cases of a specific disease or condition develop during a certain period of time.
More Info
Measuring the incidence is a way to keep track of how many new cases or events happen in a population at risk during a given time period.
The incidence is generally reported as a rate.
For example, in a study with 10 participants, if 3 people report headaches after taking the study medication and 7 do not, the incidence of headaches is 30% (3/10 = .3 or 30%)
Other info to think about when joining a study
You might see the word “incidence” used to describe the frequency of a disease or condition.
The word can also be used to describe the expected or actual number of adverse events in a study.
Other Resources
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Version 2.0 September 2024
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