Question 5 / 9:  A study was conducted among men aged 40-70 to determine whether regularly exercising two or more hours per week decreases the likelihood of having a heart attack. Cases were 1,000 men who had recently had a heart attack; of these 200 reported that they had regularly exercised for two or more hours per week prior to their heart attack. Controls were 2,000 men who had never had a heart attack; of these, 750 reported that they regularly exercised two or more hours per week. Set up the 2-by-2 table for these data. The numeric value of the appropriate measure of association for these data is . . .
A  0.42
B  0.54
C  1.85
D  2.38
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Pre-class Online Quiz - Case Control Studies

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