Suppose that an investigation of the association between regular physical activity and ovarian cancer revealed that...

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Suppose that an investigation of the association between regularphysical activity and ovarian cancer revealed that the incidencerate of ovarian cancer among women who engaged in regular physicalactivity was 30 per 100,000 women-years of follow-up, whereas therate among women who did not engage in regular activity was 45 per100,000 women-years of follow-up.

A. use these data to compute the incidence rate ratio of ovariancancer for women who are physically active versus women who arenot.

B. State in woads you interpretation of this measure.

C. Computer the incidence rate difference of ovarian cancer forwomen who are physically active versus women who are not.

D. State in words your interpretation of this measure.

E. If there were not association between regular physicalactivity and ovarian cancer, what would be the numeric values ofthe incidence rate ratio and incidence rate difference.

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