Question: Explore when the odds ratio will approximate the risk ratio. 4. In the following example, we will explore when the odds ratio will approximate the

Explore when the odds ratio will approximate the risk ratio.

4. In the following example, we will explore when the odds ratio will approximate the risk ratio. Cohort study A: Diseased Not Diseased Total 5 195 200 Exposed Unexposed Total 10 790 800 15 985 1000 a. Calculate the risk ratio b. Calculate the odds ratio C. Does the odds ratio do a good job of approximating the risk ratio? Cohort study B: Diseased Not Diseased Total 100 100 200 Exposed Unexposed 200 600 800 300 700 1000 d. Calculate the risk ratio e. Calculate the odds ratio f. Does the odds ratio do a good job of approximating the risk ratio? g. What changed from Cohort A to Cohort B? i. When does the OR do a good job of approximating the RR

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