Third-Generation Capsule Endoscopy Outperforms Second-Generation Based on the Detectability of Esophageal Varices

Table 4

Accuracy of capsule endoscopy for the diagnosis of straight, small-caliber esophageal varices.

(a)

SB2 findings	EGD findings		Total
	+	−
+	16	0	16
−	15	44	59
Total	55	44	99

value, 0.56; sensitivity, 52%; specificity, 100%; positive predictive value, 100%; negative predictive value, 75%.

(b)

SB3 findings	EGD findings		Total
	+	−
+	30	0	30
−	7	18	25
Total	37	18	55

value, 0.74; sensitivity, 81%; specificity, 100%; positive predictive value, 100%; negative predictive value, 72%.
EGD: esophagogastroduodenoscopy; SB2: second-generation PillCam SB2; SB3: third-generation PillCam SB3.