A test for comparing conditional ROC curves with multidimensional covariates

The comparison of Receiver Operating Characteristic (ROC) curves is frequently used in the literature to compare discriminatory capability different classification procedures based on diagnostic variables. performance these variables can be sometimes influenced by presence other covariates, and thus they should taken into account when making comparison. A new non-parametric test proposed here for testing equality two or more dependent ROC conditioned value a multidimensional covariate. Projections are transforming problem one-dimensional approach easier handle. Simulations carried out study practical methodology. procedure then analyse real data set patients with Pleural Effusion markers.