The percentage of persons living in the United States who have epilepsy is best referred to as

A) the incidence of epilepsy.
B) the prevalence of epilepsy.
C) the rate of epilepsy.
D) the epidemiological transition.
E) the demographic transition.

Prevalence

The proportion of a population found to have a condition or disease at a specific time.

Epidemiological Transition

A phase of development marked by a sudden and stark increase in population growth rates brought about by medical innovation in disease or sickness treatment.

Incidence

The rate at which new cases of a disease or condition occur in a specific population over a given period of time.