Table 4.

Performance of the nomogram for estimating the risk of transmural bowel infarction

Variable	Value (95%CI)
	Training cohort (207)	Validation cohort (89)
Cutoff value	90	90
AUC	0.860 (0.771-0.925)	0.851 (0.796-0.897)
Sensitivity, %	88.89 (71.94-96.15)	84.48 (73.07-91.62)
Specificity, %	67.74 (55.37-78.05)	71.81 (64.11-78.42)
Positive predictive value, %	54.55 (40.07-68.29)	53.85 (43.66-63.72)
Negative predictive value, %	93.33 (82.14-97.71)	92.24 (85.91-95.86)
Positive likelihood ratio	2.76 (2.43-3.07)	3.00 (2.84-3.16)
Negative likelihood ratio	0.16 (0.08-0.32)	0.22 (0.17-0.27)
Diagnostic accuracy, %	74.16 (64.20-82.12)	75.36 (69.07-80.73)

AUC: Area under the receiver operator characteristic curve; CI: Confidence interval.