Competing Risks: KM vs. CIF Explorer

Simulate cancer and cardiovascular deaths together and see why treating a competing event as censoring inflates a naive Kaplan-Meier curve.

competing risks
cumulative incidence function
Aalen-Johansen
survival analysis

Cancer mortality: naive KM vs. true CIF

Naive KM (censors CV deaths)Cumulative incidence (Aalen-Johansen)

Cumulative incidence by cause (stacked)

CancerCardiovascular

Simulation summary

Total patients

1000.000

Cancer deaths

524.000

CV deaths

384.000

Censored

92.000

High competing-risk ratio

With CV/cancer hazard ratio 0.80, censoring competing deaths in a naive KM curve substantially overestimates cancer-specific mortality. The CIF is the correct estimand here.

Preparing the simulation…