A confidence interval that crosses 1.0 for a relative risk suggests that:
Show answer and explanation
Correct answer: The result is not statistically significant
A relative risk of 1.0 means no difference between groups. If the confidence interval includes 1.0, the no-effect value lies within the plausible range of results, so the finding is not statistically significant at the corresponding significance level. It does not mean the study is invalid, only that an effect has not been demonstrated.
Keep practicing
More Evidence-Based Medicine questions
- Publication bias occurs when:
- Which of the following best defines relative risk (RR)?
- An intention-to-treat analysis is important because it:
- Which type of bias is minimized by random allocation in clinical trials?
- A meta-analysis differs from a systematic review because it:
- Which statistical measure is most appropriate for time-to-event data in clinical trials?