| OR (95% CI for OR) | p Value | |
| Histological subtype | ||
| Diffuse | 1.000 | 1.000 |
| Intestinal | 2.637 (1.784–3.896) | 0.000 |
| Tumour site | ||
| Gastric non-cardia | 1.000 | 1.000 |
| Gastric cardia | 0.995 (0.648–1.529) | 0.983 |
| Distal oesophagus | 1.368 (0.883–2.121) | 0.161 |
| p Value for trend | 0.333 |