Table 3.

Per-patient sensitivity and specificity for disease presence and extent against the consensus reference standard for patient groups combined

	Sensitivity					Specificity
	Number of disease positive*	MRE	Ultrasound	Difference	p value	Number disease negative*	MRE	Ultrasound	Difference	p value
Small bowel disease extent†	233	80% (72 to 86)	70% (62 to 78)	10% (1 to 18)	0·027	51	95% (85 to 98)	81% (64 to 91)	14% (1 to 27)	0·039
Small bowel disease presence	233	97% (91 to 99)	92% (84 to 96)	5% (1 to 9)	0·025	51	96% (86 to 99)	84% (65 to 94)	12% (0 to 25)	0·054
Colonic disease extent†	129	22% (14 to 32)	17% (10 to 27)	5% (−5 to 15)	0·332	155	93% (87 to 97)	93% (87 to 97)	0% (−5 to 5)	1·000
Colonic disease presence	129	64% (50 to 75)	73% (59 to 83)	−9% (−23 to 5)	0·202	155	96% (90 to 98)	96% (90 to 98)	0% (−3 to 3)	1·000
Small bowel and colonic disease extent†	270	44% (36 to 54)	29% (21 to 38)	16% (6 to 25)	0·002	14	80% (42 to 96)	61% (23 to 89)	19% (−20 to 59)	0·337
Small bowel and colonic disease presence‡	270	78% (70 to 85)	71% (62 to 79)	7% (−2 to 15)	0·117	14	80% (42 to 96)	61% (23 to 89)	19% (−20 to 59)	0·335

Data are n, % (95% CI), or p value. MRE=magnetic resonance enterography.

^*Patients by consensus reference standard.

^†Agreement with reference standard for disease presence and segmental location.

^‡Agreement with reference standard for disease presence (patients with disease in the small bowel, colon, or both).