Table 1.
Cohort characteristics. (pT: Primary tumor extent, pN: Regional lymph node metastasis, LNR: lymph node ratio, UICC: Union for International Cancer Control, PDC: poorly differentiated cluster, pM: Distant metastasis).
| Variable | n/% | |
|---|---|---|
| Number of patients | n | 290 |
| Age at surgery (years) | mean, range | 66.12759 (34–89) |
| Sex | female | 107 |
| male | 183 | |
| Extent of gastrectomy | total | 184 |
| subtotal | 106 | |
| Location | cardia | 98 |
| fundus–body–antrum | 192 | |
| Lauren classification | intestinal | 159 |
| diffuse | 107 | |
| mixed | 27 | |
| Resection margin | R0 | 222 |
| R1 | 68 | |
| Perineural invasion | present | 81 |
| absent | 209 | |
| Lymphovascular invasion | present | 179 |
| absent | 111 | |
| Tumor differentiation | well | 6 |
| moderate | 92 | |
| poor | 192 | |
| pT | Ia | 12 |
| Ib | 14 | |
| II | 21 | |
| III | 146 | |
| IVa | 73 | |
| IVb | 24 | |
| pN | 0 | 80 |
| 1 | 52 | |
| 2 | 56 | |
| 3a | 62 | |
| 3b | 40 | |
| LNR | mean, range | 0.38 (0.0–1.0) |
| Distant metastasis (pM) | present | 17 |
| absent | 273 | |
| UICC Stage | IA | 23 |
| IB | 15 | |
| IIA | 35 | |
| IIB | 49 | |
| IIIA | 52 | |
| IIIB | 57 | |
| IIIC | 42 | |
| IV | 17 | |
| Tumor budding grade | Bd 0 | 3 |
| Bd 1 | 19 | |
| Bd 2 | 40 | |
| Bd 3 | 228 | |
| PDC grade | PDC 0 | 1 |
| PDC 1 | 16 | |
| PDC 2 | 39 | |
| PDC 3 | 234 | |
| Follow-up period | mean, range | 33.803 (1–137) |
| Death | n | 228 (78.62%) |
| Perioperative death | n | 16/290 (5.52%) |