Diagnostic accuracy of tests for Helicobacter pylori in an Alaska Native population

Figure 2 The receiver operating characteristic curves for anti-Helicobacter pylori level (serological test) and ¹³C urea breath test delta over baseline vs the gold standard for Helicobacter pylori infection in a group of 280 Alaskans undergoing esophagogastroduodenoscopy. Gold standard was a positive Helicobacter pylori test by culture or, in the case of a negative culture result, a positive histology result and a positive campylobacter-like organism test. ROC: Receiver operating characteristic; UBT: Urea breath test; DOB: Delta over baseline; HP: Helicobacter polori; IgG: Immunoglobulin G.