Period Prevalence Calculator

Formula

The formula to calculate the period prevalence rate is:

\[ PP = \frac{C}{P} \times 100 \]

Where:

\( PP \) is the period prevalence rate (%)
\( C \) is the number of cases during the period
\( P \) is the population at risk during the same period

What is Period Prevalence?

Period prevalence refers to the proportion of a population that is affected by a particular disease or condition at any point during a specified time period. It is a measure of how widespread the condition is within the population at risk. This metric is useful for public health officials to understand the burden of a health problem within a community and to allocate resources accordingly.

Example Calculation

Let's assume the following values:

Number of Cases (C): 500
Population at Risk (P): 50,000

Using the formula to calculate the period prevalence rate:

\[ PP = \frac{500}{50000} \times 100 = 1\% \]

The period prevalence rate is 1%.