A new treatment is developed that prevents death but does not produce recovery from a previously lethal disease.Which of the following will occur?
A)Prevalence will increase
B)Prevalence will decrease
C)Incidence will increase
D)Incidence will decrease

Question

Quizplus · Accepted Answer

Prevalence is a function of incidence (the rate at which new cases of disease
occur) and duration (how long an incident case continues to have the disease).If cases
no longer die from the disease their duration of life with the disease present necessarily
increases, hence prevalence increases.The new treatment will not, however, affect how
quickly new cases occur so it will not affect the incidence of the disease.

A New Treatment Is Developed That Prevents Death but Does