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USMLE · Question #563
USMLE Question #563: Real Exam Question with Answer & Explanation
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Question
In a cohort study of elderly women, the relative risk ratio for hip fractures among those who exercise regularly is 1.2 (95% confidence interval of 1.1 to 1.8). Which of the following is the most appropriate conclusion about the effect of regular exercise on the risk for hip fracture?
Options
- AStatistically nonsignificant increase in risk
- BStatistically nonsignificant overall decrease in risk
- CStatistically significant overall decrease in risk
- DStatistically significant overall increase in risk
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