Fig. 1

a Scatterplot of the potential times \(T_{AE}\) and \(T_{RL}\) according to the four groups identified by the binary covariates \(X_1\) and \(X_2\); b Zoom of the scatterplot in panel a) selecting potential times \(T_{AE}\) and \(T_{RL}\) lower than 1; c histogram of the distribution of the failure times calculated as the minimum value between \(T_{AE}\) and \(T_{RL}\), in the simulated data of \(N=300\) subjects