2,006 persons are cross classified by disease and exposure. Our outcome of interest is having the...

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2,006 persons are cross classified by disease and exposure.
Our outcome of interest is having the disease.
Use the following 2 x 2 table to answer questions below.
Disease
No Disease
Exposed
9
992
Not Exposed
16
989
a. What percent of people have disease?
b. What percent of the exposed persons have disease?
c. What is the odds of disease among the exposed?
d. What is the odds of disease among the unexposed?
e. What is the odds ratio of disease among the exposed andunexposed. Interpret the odds ratio and comment whether theexposure is deleterious or protective.

Answer & Explanation Solved by verified expert

3.8 Ratings (733 Votes)

diseased people = (9+16)/2006 = 1.25%

percent of the exposed persons have disease = 9/(9+992)*100= 0.90%

odds of disease among the exposed = 9/992 = 0.00907

d) odds of disease among the unexposed=16/989= 0.0162

e) odds ratio = (9/992)/(16/989) = 0.5608

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	Disease	No Disease
Exposed	9	992
Not Exposed	16	989