Several statistical measures are used to quantify associations:
- Relative Risk (RR): The ratio of the probability of an event occurring in the exposed group versus the non-exposed group. It is commonly used in cohort studies. - Odds Ratio (OR): The odds of an event occurring in the exposed group compared to the non-exposed group. This measure is frequently used in case-control studies. - Correlation Coefficient: Measures the strength and direction of a linear relationship between two continuous variables.