Table 3.

The diagnostic characteristics of the bowel ultrasound in the detection of small intestinal and large bowel disease and its correlation to disease activity index

	Bowel ultrasound					Disease activity index
	Sensitivity	Specificity	PPV	NPV	Accuracy	Remission	Activity	P value
Large bowel	37.5%	91.7%	75%	68.8%	0.700	0 (0)	8 (23.5%)	0.184
Ileum	93.8%	50%	88.2%	66.7%	0.850	6 (100%)	28 (82.4%)	0.264
Thickness (> 3 mm)	83.3%	50%	41.7%	87.5%	0.600	4 (66.7%)	20 (58.8%)	0.718
Extent	33.3%	85.7%	50%	75%	0.700	0 (0)	8 (23.5%)	0.184
Mesenteric lymphadenopathy	16.7%	71.4%	20%	66.7%	0.550	0 (0)	10 (29.4%)	0.125
Fistula	85.7%	100%	100%	92.9%	0.950	0 (0)	12 (35.3%)	0.082
Stricture and proximal dilatation	100%	94.4%	66.7%	100%	0.950	0 (0)	6 (17.6%)	0.264
Abscess	100%	100%	100%	100%	0.1	0 (0)	6 (17.6%)	0.264

Data are n (%). PPV: Positive predictive value; NPV: Negative predictive value