Table 2.

Evaluation index statistics

Areas	TPR	TNR	FPR	FNR
EIT	0.788	0.994	0.232	0.163
QLM	0.813	0.996	0.126	0.163
Bone	0.735	0.990	0.072	0.245
P value*	< 0.001	< 0.001	< 0.001	< 0.001

EIT, external oblique muscle, internal oblique muscle, transversus abdominis muscle; QLM, quadratus lumborum block; TPR, true-positive rate; TNR, true-negative rate; FPR, false-positive rate; FNR, false-negative rate. *The P value is calculated by ANOVA for the test result for the same indicator