Risk factors for gastric cancer
| Factor | Gastric cancer, n=24 | Non-gastric cancer, n=547 | Crude HR (95% CI) | Adjusted HR* (95% CI) | P value |
| All patients | |||||
| Medication | |||||
| Non-use | 8 | 407 | 1 | 1 | |
| H2RA | 3 | 35 | 3.01 (0.80 to 11.4) | 2.65 (0.69 to 10.2) | 0.155 |
| PPI | 13 | 105 | 3.55 (1.46 to 8.62) | 3.61 (1.49 to 8.77) | 0.005 |
| IM | |||||
| None | 6 | 393 | 1 | 1 | |
| Mild (antrum only) | 10 | 105 | 5.65 (2.05 to 15.5) | 4.37 (1.56 to 12.3) | 0.005 |
| Severe (corpus) | 8 | 49 | 8.92 (3.09 to 25.7) | 4.65 (1.47 to 14.7) | 0.009 |
| Atrophy† | |||||
| None | 1 | 167 | 1 | 1 | |
| Mild (antrum only) | 10 | 284 | 5.12 (0.66 to 40.0) | 2.78 (0.35 to 22.4) | 0.337 |
| Severe (corpus) | 13 | 96 | 19.7 (2.58 to 151) | 8.85 (1.08 to 72.3) | 0.042 |