Gastric ulcer patients and non-ulcer controls from whom endoscopic biopsy samples were taken
| Ulcer | Non-ulcer | |
| No of subjects | 17 | 52 |
| Mean (SEM) age (y) | 56 (4) | 57 (2) |
| Sex (M:F) | 9:8 | 22:30 |
| Smoker (%) | 5 (29) | 12 (23) |
| H pylori infection (%) | 8 (47) | 23 (44) |
| NSAID use (%) | 12 (59) | 33 (63) |