Accuracy of community based video capsule endoscopy in patients undergoing follow up double balloon enteroscopy

Table 1 Demographics n (%)

Total patients	89
Male	55 (62)
Female	34 (38)
Median days from VCE to DBE	29 (8-64)
Age (range) (yr)	66 (19-93)
Antegrade DBE	44 (49)
Retrograde DBE	11 (12)
Antegrade and retrograde DBE	34 (38)

VCE: Video capsule endoscopy; DBE: Double balloon enteroscopy.

Table 2 Diagnostic yield by lesion

	VCE	DBE	P value
Angioectasia	25%	35%	0.03
Diverticula	1%	12%	0.002
Mass	2%	2%	NA
Polyps	22%	20%	0.62
Ulcers	17%	14%	0.44
All Lesions	64%	66%	0.72

VCE: Video capsule endoscopy; DBE: Double balloon enteroscopy; NA: Not available.

Table 3 Test characteristics of video capsule endoscopy using double balloon enteroscopy as the Criterion Standard

Lesions	VCE+/DBE+	VCE+/DBE+	VCE+/DBE+	VCE+/DBE+	Sensitivity of VCE	Specificity of VCE	PPV	NPV
Angioectasia	18	4	13	54	58%	93%	82%	81%
Diverticula	1	0	10	78	9%	100%	100%	89%
Mass	2	0	0	87	100%	100%	100%	100%
Polyps	11	9	7	62	61%	87%	55%	90%
Ulcers/erosions	6	9	6	68	50%	88%	40%	92%

VCE: Video capsule endoscopy; DBE: Double balloon enteroscopy; PPV: Positive predictive value; NPV: Negative predictive value.