Risk Ratio
What does a risk ratio of 1 mean?
The risk ratio of 1 indicates that there is no difference in risk between the exposed and unexposed groups.
When is the risk ratio used in research?
The risk ratio is used in cohort studies and trials to assess the association between exposures and health outcomes. It is particularly useful for studying the effects of risk factors on disease occurrence.
Can the risk ratio be used to establish causality?
While the risk ratio provides evidence of an association between an exposure and an outcome, it does not establish causality on its own.
How does the risk ratio differ from the odds ratio?
The risk ratio compares risks directly, while the odds ratio compares odds. The risk ratio is used when the outcome is common, whereas the odds ratio is used when the outcome is rare.