Clarithromycin-based triple therapy was applied to the first group -LSB- rabeprazole , amoxicillin and clarithromycin ( PAC ) group : proton pump inhibitor ( PPI ) , amoxicillin , clarithromycin -RSB- , whereas the second group was treated with metronidazole-based triple therapy -LSB- rabeprazole , amoxicillin and metronidazole ( PAM ) group : PPI , amoxicillin , metronidazole -RSB- .