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Types of proton pump inhibitors used in the pretreatment in Group B n (%)
| Group B-I3-14 d (n = 146) | Group B-II15-55 d (n = 274) | Group B-III≥ 56 d (n = 97) | P value1 | |
| Lansoprazole | 80 (54.8) | 174 (63.5) | 62 (63.9) | 0.294 |
| Rabeprazole | 56 (38.4) | 82 (29.9) | 29 (29.9) | |
| Esomeprazole | 8 (5.5) | 17 (6.2) | 4 (4.1) | |
| Omeprazole | 2 (1.4) | 1 (0.4) | 2 (2.1) |
Fisher’s exact test was used.
