A prospective comparison of symptoms and five diagnostic tests in patients with helicobacter pylori positive and negative dyspepsia

The purpose of this study was to compare the sensitivity, specificity and positive and negative predictive values of five diagnostic tests which detect Helicobacter. pylori, to investigate whether there is a difference insymptom severity between H. pylori-positive and -negative patients who present with dyspepsia, and to estimate the true prevalence of H. pylori in our population using misclassification rates of the five diagnostic tests. …