Table 2.

Diagnostic Performances of the Radiomic Model and Radiologists’ Visual Interpretation in Differentiating Moderate–Severe From None–Mild Intestinal Fibrosis in the Training Cohort and the Total Test Cohort

Variable	AUC (95% CI)	Accuracy	Sensitivity	Specificity	P valuea
Training cohort (n = 98b)
Radiomic model
Overall	0.888 (0.818–0.957)	0.857	0.815	0.939	<.001
Inflammatory severity
None-mild	0.836 (0.580–1.000)	0.813	0.818	0.800	.010
Moderate-severe	0.890 (0.813–0.966)	0.866	0.815	0.964	<.001
Visual interpretation
Radiologist 1	0.508 (0.388–0.629)	0.582	0.646	0.455	.892
Radiologist 2	0.567 (0.448–0.686)	0.531	0.477	0.636	.281
Test cohort (n = 114b)
Radiomic model
Overall	0.832 (0.745–0.919)	0.833	0.902	0.656	<.001
Inflammatory severity
None-mild	0.829 (0.683–0.926)	0.721	0.750	0.704	<.001
Moderate-severe	0.785 (0.671–0.874)	0.901	0.939	0.400	<.001
Visual interpretation
Radiologist 1	0.554 (0.458–0.647)	0.570	0.561	0.594	.354
Radiologist 2	0.598 (0.502–0.689)	0.649	0.585	0.813	.071

NOTE. Accuracy, sensitivity, and specificity of the radiomic model in training and test cohorts were calculated with the cut-off value of 0.811, which maximizes the Youden index in the training cohort.

CI, confidence interval.

^aP value is the significance level of comparison of AUC with that of random case (AUC = 0.5).

^bNumber of involving bowel segments.