Risk factors for Helicobacter pylori resistance in the United States: the surveillance of H. pylori antimicrobial resistance partnership (SHARP) study, 1993-1999.

Background: Pretreatment antimicrobial resistance has an important impact on the efficacy of many Helicobacter pylori treatment regimens.

Objective: To estimate the prevalence of H. pylori resistance to antimicrobials in the United States, to characterize risk factors associated with H.