- Explanation: 1 / 2 light blue in the upper right corner of the table is the p value of t-test between the two groups; 1 / 2 light gray in the lower left corner of the table refers to theAUC of the two groups. For example: the area under the ROC curve of the first column - the second row was 0.672 represents the AUC of the two groups, at this time, the corresponding p value is the first row - the second case < 0.05