From Gut:
… after adjustment for the covariates age, sex, erosive oesophagitis, hiatus hernia, degree of gastritis, and severity of symptoms at baseline, H pylori eradication was the only predictor of treatment failure.
This is quite interesting. I don't have access to full-text of this article – so let's not jump on this bandwagon just yet – but it's an interesting topic – and a common clinical problem.