Table 3.

The results of receiver operating characteristic analysis

Characteristics	Area under the curve (95% CI)	p value
Age	0.568 (0.430–0.706)	0.294
Location (head or neck vs body or tail)	0.641 (0.523–0.759)	0.028
Size	0.710 (0.590–0.830)	0.001
Wall enhancement	0.619 (0.497–0.741)	0.064
Mural nodule	0.565 (0.435–0.694)	0.316
Solitary cyst	0.526 (0.400–0.652)	0.687
Central calcification	0.564 (0.435–0.693)	0.323
Lobulated contour	0.667 (0.542–0.793)	0.009
SHAPE_Volume (mL)	0.700 (0.580–0.821)	0.002
SHAPE_Volume (# vx)	0.685(0.563–0.808)	0.004
GLRLM_HGRE	0.672 (0.562–0.781)	0.007
GLRLM_SRHGE	0.756 (0.652–0.859)	< 0.001
GLRLM_LRHGE	0.682 (0.559–0.805)	0.004
GLRLM_GLNU	0.701 (0.580–0.821)	0.002
GLRLM_RLNU	0.671 (0.548–0.794)	0.007
GLZLM_LZE	0.698 (0.575–0.822)	0.002
GLZLM_LZHGE	0.692 (0.567–0.817)	0.003
GLZLM_GLNU	0.704 (0.587–0.820)	0.001
GLZLM_ZLNU	0.668 (0.547–0.790)	0.008
Combination_Textural parameters	0.777 (0.673–0.880)	< 0.001
Combination_Morphological features	0.783 (0.665–0.900)	< 0.001
Combination_All	0.893 (0.816–0.970)	< 0.001

The bold values indicate that the corresponding features are good factors to differentiate the two diseases

Abbreviations: HGRE High Gray-level Run Emphasis; SRHGE Short-Run High Gray-level Emphasis; LRHGE Long-Run High Gray-level Emphasis; GLNU Gray-Level Non-Uniformity; RLNU Run Length Non-Uniformity; LZE Long-Zone Emphasis; LZHGE Long-Zone High Gray-level Emphasis; GLNU Gray-Level Non-Uniformity; ZLNU Zone Length Non-Uniformity Zone