Dissecting the Evolving Risk of Relapse over Time in Surveillance for Testicular Cancer

Figure 1

Timing of events and risk prediction. At baseline, the cumulative risk of outcomes A and B at 5 years is equivalent. However, the corresponding risk at 2 years is different, and this relates to the timing of events. Similarly, a patient that has survived 2 years without experiencing outcome A is at negligible risk of this outcome, given that this outcome does not occur after this time point. Conversely, at 2 years, they continue to be at risk for outcome B, demonstrating that the relative importance of observing for outcomes A and B changes over time.