Prevalence of Disease Calculator

In medical terms, Prevalence is the term used to denote the measurements of disease frequency. Prevalence of a disease is the measurement of how much people are affected by a specific disease at a particular time or over a specified period of time. This online calculator helps you calculate the prevalence rate of disease. In the below Prevalence of Disease calculator enter the positive and negative values for the number of diseases and click calculate.

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Formula:

Disease Prevalence = (True Positive + False Negative) / (True Positive + False Negative + False Positive + True Negative) x 100

Example

If the true positive and true negative values are 4,3 and false positive and false negative values are 7,6 then

Prevalence of Disease = ((4 + 6) / (4 + 6 + 7 + 3)) x 100
= 50%


Prevalence of a disease is the proportion of population affected by a specific disease at a particular time.

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