Table 4.

 Performance of investigational methods in detecting small bowel Crohn’s disease in patients with previously established diagnosis Crohn’s disease and with suspected Crohn’s disease

	Enteroclysis	MRI	CE
Established CD
Findings	16	22	13
Normal	8	3	1
Detection rate (%)	67	88	93
Drop-out	3	2	13
Total	27	27	27
Suspected CD
True positive	4	10	12
False positive	0	2	0
True negative	6	8	11
False negative	6	4	1
PPV (%)	100	83	100
NPV (%)	50	66	92
Drop-out	9	1	1
Total	25	25	25

CD, Crohn’s disease; MRI, magnetic resonance imaging; CE, capsule endoscopy; PPV, positive predictive value; NPV, negative predictive value.