step1000
Topics: 10
Posts: 29
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The prevalence of a dz is half as great in town than it is in town B, but the incidence of the dz is no fifferent in town A than it is in town B. which is the best explanation?
a. the case fatality rate is twice as high in town A
b. duration of dz is twice as long in town B
c. # of new cases in town are twice as many as those in town B
d. people in town A use medical care facilities 1/2 as often as those in town B
e. proportion of asymptomatic cases is twice as much in town B than in town A
the answ is B. can anyone explain why? thanks.
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| jean robert
Forum Guru
Topics: 144
Posts: 596
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Prevalence= Incidence x Duration
increase duration of disease---------------------> increase Prevalence.
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