| H. pylori positive n (%) | H. pylori negative n (%) | Total n (%) |
Normal mucosa | 11 (63%) | 7 (37%) | 18 (100) |
Mucosa anomalies | 12 (64%) | 7 (36%) | 19 (100) |
Total | 23 (63%) | 14 (37%) | 37 (100) |