| Background | Metaplasia | p-Value | |
| Yes n (%) | No n (%) | ||
| Alcohol | 5 (3.3) | 20 (13.2) | 0.17 |
| Tobacco | 1 (0.7) | 4 (2.6) | 0.47 |
| Traditional therapy | 9 (5.9) | 79 (52.0) | 0.47 |
| Coffee | 2 (1.3) | 22 (14.5) | 0.74 |
| Tea | 7 (4.6) | 32 (21.1) | 0.17 |
| Consumption of dairy products | 1 (0.7) | 3 (2.0) | 0.40 |
| NSAIDs | 2 (1.3) | 15 (9.9) | 1.00 |
| Aspirin | 1 (0.7) | 0 (0) | 0.12 |
| PPI | 3 (2.0) | 4 (2.6) | 0.04* |
| Anti acids | 4 (2.6) | 17 (11.2) | 0.28 |
| Alginates | 1 (0.7) | 3 (2.0) | 0.40 |