Measures of Disease Frequency and Association in Epidemiology

Epidemiologists often quantify the occurrence of diseases in populations through measures of disease frequency. These include the prevalence and incidence rates. Prevalence refers to the proportion of individuals in a population who have a particular disease at a specified point in time, while incidence rates indicate the rate at which new cases of a disease occur within a given time period. Incidence rates can be further broken down into measures such as cumulative incidence and incidence densi...