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Incidence Data versus Prevalence Data

The differences between incidence and prevalence data are discussed, including under what circumstances each type of data may be useful and implications.

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Incidence and prevalence data are frequently used when discussing a health or disease process of interest. Incidence is the number of NEW cases of a disease occurring in a population within a given time period. Incidence is typically expressed as a ratio, with the number of new cases as the numerator and the total number in a population as the ...