a, Impaired glucose tolerance (IGT) discrimination was evaluated in the independent internal validation test set (N = 2881, 192 IGT individuals) for models based on proteins selected in more than 80% (65 proteins), 90% (18 proteins) or 95% (8 proteins) and kept after model optimization step or based on all proteins (4979 proteins). b, isolated impaired glucose tolerance (iIGT) discrimination was evaluated in the independent internal validation test set (N = 2819, 135 iIGT individuals) for models based on proteins selected in more than 80% (73 proteins), 90% (17 proteins) or 95% (3 proteins) and kept after model optimization step or based on all proteins (4979 proteins).