Proper denominator representing the exposure Relative Risk is quite similar to Odds Ratio, although RR is calculated by the use of percentages, whereas Odds12/8/19 Relative risk has two important features, ie Comparison between two exposures, and;Odds Ratio (OR) is a measure of association between exposure and an outcome Description Odds Ratio (OR) refers to the ratio of the odds of the outcome in two groups in a retrospective study Mnemonic cOhOrt has two O's If OR is less than 1, then there is an inverse and decreased risk Odds Ratio Vs Relative Risk SUMMARY The odds ratio (OR) and relative risk (RR) are
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