Table 6.

CCRCC survival prediction test performance reported as five-fold mean (±s.d.).

	c-Index	AUC	P-Value
Site 1 only	0.502±0.018	0.513±0.032	0.937
Site 2 only	0.506±0.017	0.520±0.022	0.662
Site 3 only	0.645±0.064	0.674±0.077	9.14 × 10−4
Centralized	0.692±0.043	0.729±0.046	1.39 × 10−8
Federated, α = 0	0.683±0.064	0.719±0.070	2.86 × 10−8
Federated, α = 0.001	0.639±0.090	0.664±0.103	1.52 × 10−5
Federated, α = 0.01	0.648±0.099	0.676±0.111	2.39 × 10−5
Federated, α = 0.1	0.647±0.085	0.672±0.098	2.52 × 10−9
Federated, α = 1	0.508±0.036	0.504±0.044	0.805