Table 2.

Cross-validated C-index estimates in the DCS cohort

Modela	Unpenalised	Penalised	Exclusion
Lasso+sel (cv)	0.72	0.73	0.69
Lasso+sel (10)	0.72	0.72	0.67
Lasso+sel (50)	0.73	0.73	0.70
ridge	0.72	0.69	0.68
GRridge	0.73	0.72	0.69
GRridge+sel (lasso)	0.72	0.76	0.72
GRridge+sel (10)	0.72	0.73	0.71
GRridge+sel (50)	0.72	0.75	0.72
GRlasso+sel (cv)	0.73	0.73	0.67
GRlasso+sel (10)	0.72	0.73	0.70
GRlasso+sel (50)	0.72	0.72	0.68
MR	0.74	0.73	0.71
RF	0.71	0.67	0.67
CoRF	0.73	0.63	0.59

^aNumbers in parentheses indicate the number of features selected in the model, that is, optimal number (cv) of features, 10 features or 50 features

cv, cross-validation; MR, multiridge; RF, random forest; sel, selection