Variability in patient response is often quantified using statistical methods and epidemiological study designs. Key metrics include:
Relative Risk (RR): This measures the strength of the association between an exposure and an outcome. A higher RR indicates a stronger association.
Odds Ratio (OR): Commonly used in case-control studies, the OR estimates the odds of an outcome occurring in the presence of an exposure compared to its absence.
Hazard Ratio (HR): Used in survival analysis, HR assesses the effect of an exposure on the time to an event, such as death or disease recurrence.
Standard Deviation (SD) and Variance: These metrics quantify the dispersion of data points around the mean, indicating the extent of variability in patient responses.
