The results were as follows:
(1) successful per protocol H. pylori eradication, 100%;
(2) the percentage of patients treated with OAM who were free of symptoms on per protocol basis, 87% (46/53);
(3) percentage of patients treated with eradication therapy who were not receiving acid-suppressing therapy at the end of 1 year on intention-to-treat basis, 80.3% (49/61); and
(4) percentage of patients treated with the maintenance therapy needing no further investigation on per protocol basis, 98% (51/52).
1 patient with active ulcer at endoscopy required pump inhibitor and maintenance therapy. Probability of being treated with omeprazole/clarithromycin was 5% (3/56). Probability of being treated with OC and eradicated at first attempt and free from symptoms was 100% (3/3). These data were used as the principal variables to populate the decision tree with probabilities for each outcome.