[Relative Risk]( ) (RR) and [Odds Ratio]( ) (OR) are measures used to quantify the strength of the association between an exposure and an outcome:
- Relative Risk is the ratio of the probability of the event occurring in the exposed group to the probability in the non-exposed group. An RR greater than 1 indicates increased risk, while an RR less than 1 indicates decreased risk. - Odds Ratio compares the odds of the event in the exposed group to the odds in the non-exposed group. OR is often used in case-control studies and provides similar interpretations to RR.
