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USMLE · Question #563

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 appr

The correct answer is D. Statistically significant overall increase in risk. See the full explanation below for the reasoning.

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

How the community answered

(25 responses)
  • A
    4% (1)
  • B
    12% (3)
  • C
    8% (2)
  • D
    76% (19)

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