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Proportions of patients with acid-sensitivity and reflux hypersensitivity (RH) in the study cohorts. 91.7% of patients with RH also had acid sensitivity. There was 102.6% gain in RH diagnosis over acid sensitivity alone. Proportions with pure RH were higher when pH impedance testing was performed on PPI (p=0.002 compared to off PPI), indicating overlap between GERD and RH in these patients.
