Page 1 of 2: Prevalence

H2O · Credits: 3658 My Scrapbook

Prevalence is affected by all, except:
a.Incubation period of disease
b.Case fatality rate
c.Duration of illness
d.Incidence

honeyam5 · Credits: 2320 My Scrapbook

d.Incidence ?/

smartyroy · Credits: 13787 My Scrapbook

d. incidence

eye_61 · Credits: 259 My Scrapbook

P = I*T

P: Prevalence
I: Incidence
T: Time -- duration of illness

So I think answer is "B"

vu · Credits: 1045 My Scrapbook

agree-b)

maryana · Credits: 8183 My Scrapbook

I am hesitating between A and B

bloater · Credits: 1258 My Scrapbook

The case of case fatality is already counted in the prevalence and the fatal case dosen't make any effect further.
Incidence rate increases prevalence increases too.
When the duration of illness is longer, the chance of exposed case is increased. And as such, when the incubation period shortens and is nearly constant, the prevalence increases.

maryana · Credits: 8183 My Scrapbook

Yep, B!

dr786 · Credits: 435 My Scrapbook

its answer is b

mikejonathan20055 · Credits: 3320 My Scrapbook

Prevalence is affected by all, except:
a.Incubation period of disease
b.Case fatality rate
c.Duration of illness
d.Incidence------------------------------------

As the prevalence represents the only those which had been occured before and they are lasting till the present time not the incidence of new cases so basically the option ____ D____ will have nothing to do with prevalence

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