Table 3.

Diagnostic performance of E.G. Scan™ compared to conventional esophagogastroduodenoscopy

	Prevalence % (95%CI)	Sensitivity % (95%CI)	Specificity % (95%CI)	PPV % (95%CI)	NPV % (95%CI)	Accuracy % (95%CI)
Erosive GERD	30.1 (21.5-40.6)	44.8 (27-64)	91 (80.9-96.3)	68.4 (43.5-86.4)	79.2 (68.2-87.3)	77.1 (67.2-84.8)
Barrett’s esophagus	12.5 (6.9-21.2)	66.7 (35.4-88.7)	95 (87.6-98.5)	66.7 (35.4-88.7)	95.2 (87.6-98.5)	91.7 (83.8-96.1)
Esophageal varices	21.8 (14.4-31.7)	95.2 (74.1-99.8)	97.3 (89.8-99.5)	90.9 (69.3-98.4)	98.6 (91.7-99.9)	96.8 (90.5-99.1)
Hiatal Hernia	34.4 (25.1-44.8)	39.4 (23.4-57.7)	88.9 (77.8-95)	65 (41-83.7)	73.7 (62.1-82.8)	71.9 (61.6-80.3)

PPV: Positive predictive value; NPV: Negative predictive value; GERD: Gastroesophageal reflux disease.