. 2011 May;84(1001):418–426. doi: 10.1259/bjr/20854868

Table 3. Sensitivity for diagnosing acute appendicitis per reader for positive vs neutral oral contrast.

	Sensitivity (%)^a	Sensitivity (%)^a	p-Value^b
	Positive oral contrast (Gastrografin) (n=101 proven appendicitis)	Neutral oral contrast (VoLumen) (n=98 proven appendicitis)
Reader 1	98 (93–99.7)	97 (91–99)	0.7
Reader 2	94 (88–98)	93 (86–97)	0.8
Reader 3	96 (90–99)	97 (91–99)	1.00
Reader 4	99 (95–99.9)	98 (93–99.8)	0.6
Reader 5	91 (84–96)	89 (81–94)	0.6
Average of readers	(n=505) 96 (93–97)	(n=490) 95 (92–97)	0.5 (χ²)

^aBinomial exact 95% confidence intervals used for confidence interval reporting. ^bFisher's exact test.