Performances of the top 30 models obtained with strategy B (PCR batch level sampling). Each column corresponds to a prognostic survival model. The first 2 rows report respectively the cross-validated AUC at day 7 and the cross-validated C-index (based on the linear predictor). Darker colors correspond to better performances. The 11 next rows correspond to each candidate covariate (G1 to G6, C1, C2, C3 and C2_Fac and C3_Fac when the clinical covariates 2 and 3 have been dichotomized according to clinical expert knowledge). The number within each cell gives the percentage of selection of each variable in each model across the cross-validation iterations. Darker colors correspond to a higher selection frequency.