Table 5. Clinical factors associated with overall survival.
| Characteristic | No. of Patients N = 56 | Median survival time (days) | P Log-rank test |
| Age, y | |||
| >62 | 26 | 391 | 0.21 |
| ≦62 | 30 | 471 | |
| Sex | |||
| Male | 42 | 399 | 0.48 |
| Female | 14 | 469 | |
| Histology | |||
| Adenocarcinoma | 43 | 426 | 0.93 |
| Mucinous | 7 | 470 | |
| Signet ring cell | 6 | 416 | |
| Tumor Site | |||
| Distal stomach | 15 | 414 | 0.01 |
| Proximal stomach | 24 | 366 | |
| Whole stomach | 17 | 229 | |
| Stage | |||
| I, II | 18 | 473 | 0.21 |
| III, IV | 38 | 411 | |
| Histological grade | |||
| 2 | 11 | 459 | 0.23 |
| 3 | 28 | 401 | |
| Mixed 2–3 | 17 | 395 | |
| Lymph node metastasis | |||
| No | 11 | 485 | 0.30 |
| Yes | 45 | 420 | |
| SULF2 | |||
| Methylation | 19 | 309 | 0.02 |
| Unmethylation | 37 | 481 | |