What are the differences between Relative Risk (RR) and Hazard Ratio (HR)?
1) RR measures the ratio of the probability of an event occurring in the exposed group compared to the non-exposed group, while HR measures the ratio of the hazard rates between two groups.
2) RR is used in cohort studies and case-control studies, while HR is used in survival analysis and clinical trials.
3) RR is calculated as the ratio of the risk in the exposed group to the risk in the non-exposed group, while HR is calculated using the Cox proportional hazards model.
4) RR is a measure of association, while HR is a measure of the instantaneous risk of an event occurring.
