# Supplementary Table S7: Time-Dependent Concordance Indices
# Cohort: Full TCGA-LIHC (n=365, 130 events)
# Method: Uno's estimator for time-dependent C-index (cumulative/dynamic)
# Reference: Uno H et al. Biometrics 2011;67(1):23–30

Time_Point	Months	Patients_At_Risk_N	Events_Before_TP	C_Index_Full	C_Index_Training	C_Index_Validation	Note
1-year	12	259	106	0.72	0.71	0.70	Consistent with td-ROC AUC (Figure S5)
3-year	36	91	274	0.71	0.68	0.64	Discriminability declines modestly at longer horizons
5-year	60	40	325	0.69	0.63	0.58	Limited by fewer events at long follow-up times