The proportion of number of newly detected cases that developed during follow-up by the number of disease-free subjects at the start of follow-up.
The number of cases of disease, infection or some other event having their onset during a prescribed period of time. It is often expressed as a rate (for example, the incidence of cardiovascular disease per 1000 population aged 65-74 years during a specified year). Incidence is a measure of morbidity or other events that occur within a specified period of time. See also “prevalence”.... incidence
A quotient, with the number of cases of a specified disease diagnosed or reported during a stated period of time as the numerator, and the number of persons in the population in which they occurred as the denominator.... incidence rate
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