incidence rate

Incidence rate is a way to measure how quickly new cases of a disease or condition occur in a specific population over a certain period of time. It is calculated by dividing the number of new cases by the total amount of person-time (the sum of the periods each individual was at risk) during which the population was observed. This measure helps determine how likely it is for new cases to develop and enables comparisons across different groups or time periods, providing valuable insights into the spread or risk of a health condition.