A positive PPI test was observed 93.2% of the ERD group and 87.2% of the NERD group during 2 weeks treatment (Table 2). There was no difference between two groups (p>0.05).
lansoprazole at a dose of 15 mg, 30 mg or 60 mg once daily - erosive reflux disease (ERD)
15 mg, 30 mg or 60 mg once daily - non-erosive reflux disease (ERD)
numbers of positive proton pump inhibitor (PPI) test