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Calculate the prevalence of disease in the exposed group. Show work! ill not ill exposed 500...

Calculate the prevalence of disease in the exposed group. Show work!

ill not ill
exposed 500 200
not exposed 5 800
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Answer #1

PREVALENCE = All NEW and PRE-EXISTING cases of a specific disease during a given time / TOTAL POPULATION X 1000

In this case, we need a prevalence only in EXPOSE GROUP.

CASES IN EXPOSE GROUP ARE = 500

TOTAL POPULATION IN EXPOSE GROUP IS - 500 + 200 = 700

PREVALENCE IN EXPOSE GROUP = 500/700 X 1000 = 714 PER EVERY 1000 people or 71.4 PER EVERY 100 people

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