Risk ratio = ratio of 2 cumulative incidence estimates = relative risk;The relative risk (RR) and the odds ratio (OR) are the two most widely used measures of association in epidemiology The direct computation of relative risks is Risk Ratio vs Odds Ratio Whereas RR can be interpreted in a straightforward way, OR can not A RR of 3 means the risk of an outcome is increased threefold A RR of 05 means the risk is cut in half But an OR of 3 doesn't mean the risk is threefold;
Introduction To Genetic Epidemiology Lesson 5 Analyzing The Data