In epidemiology, prevalence is the proportion of a particular population found to be affected by a medical condition at a specific time.

What does prevalence mean?

Definition. Prevalence is the proportion of a population who have a specific characteristic in a given time period.

What is point prevalence vs prevalence?

Point prevalence refers to the prevalence measured at a particular point in time. It is the proportion of persons with a particular disease or attribute on a particular date. Period prevalence refers to prevalence measured over an interval of time.