Survival curves, typically generated using the Kaplan-Meier estimator, illustrate the proportion of individuals surviving over time. The x-axis represents time, while the y-axis shows the survival probability. Key points to consider include:
- Median Survival Time: The time at which 50% of the study population has experienced the event. - Hazard Ratio: A measure of the effect of an explanatory variable on the hazard or risk of the event occurring.
Differences in survival curves between groups can indicate the impact of treatments or risk factors.