Various metrics and methods are used to measure population level impact. Some of the commonly used metrics include:
Incidence Rate: The number of new cases of a disease in a specific period relative to the population at risk. Prevalence Rate: The total number of cases of a disease at a particular point in time relative to the population at risk. Mortality Rate: The number of deaths due to a disease in a specific period relative to the population at risk. Years of Potential Life Lost (YPLL): A measure of the impact of premature death on a population. Disability-Adjusted Life Years (DALYs): A measure that combines the burden of mortality and morbidity into a single metric.
