Table 3.

Receiver operator characteristics of textural parameters for predicting KRAS status

Feature	AUC	SE(AUC)	95%CI(AUC)	Criterion	Se(%)	Sp(%)
Mean	0.754	0.040	0.674~0.833	>72.072	58.33%	83.67%
Variance	0.759	0.038	0.684~0.834	>281.700	83.33%	60.20%
Skewness	0.703	0.043	0.618~0.787	>0.554	80.00%	69.39%
Entropy	0.800	0.035	0.731~0.870	>1.893	76.67%	78.57%
RLNU	0.802	0.036	0.731~0.872	>186.350	78.33%	76.53%
GLNU	0.813	0.034	0.746~0.880	>7.846	78.33%	74.49%

Abbreviation: AUC area under the curve, SE standard error, Se sensitivity, Sp specificity, RLNU run-length nonuniformity, GLNU gray-level nonuniformity