Table 1.
Baseline characteristics of the training cohort group by HI-GC risk score.
| Risk score | P-value | ||
|---|---|---|---|
| Low | High | ||
| N | 1264 | 387 | |
| Age | 56.5 ± 10.5 | 58.3 ± 10.6 | 0.003 |
| BMI | 22.5 ± 2.9 | 21.9 ± 2.8 | <0.001 |
| Sex | 0.667 | ||
| Male | 980 (77.5%) | 296 (76.5%) | |
| Female | 284 (22.5%) | 91 (23.5%) | |
| Type of gastrectomy | 0.386 | ||
| Proximal | 102 (8.1%) | 24 (6.2%) | |
| Distal | 519 (41.1%) | 155 (40.1%) | |
| Total | 643 (50.9%) | 208 (53.7%) | |
| Differentiation | 0.003 | ||
| Well | 127 (10.0%) | 52 (13.4%) | |
| Moderate | 176 (13.9%) | 74 (19.1%) | |
| Poor/Undifferentiation | 961 (76.0%) | 261 (67.4%) | |
| Primary tumour location | 0.612 | ||
| Proximal | 407 (32.2%) | 122 (31.5%) | |
| Body | 368 (29.1%) | 105 (27.1%) | |
| Antrum | 489 (38.7%) | 160 (41.3%) | |
| Lymphovascular invasion | 0.110 | ||
| No | 397 (31.4%) | 105 (27.1%) | |
| Yes | 867 (68.6%) | 282 (72.9%) | |
| Nerve invasion | 0.048 | ||
| No | 108 (8.5%) | 46 (11.9%) | |
| Yes | 1156 (91.5%) | 341 (88.1%) | |
| pN stage | <0.001 | ||
| 0 | 346 (27.4%) | 64 (16.5%) | |
| 1 | 249 (19.7%) | 71 (18.3%) | |
| 2 | 276 (21.8%) | 81 (20.9%) | |
| 3 | 393 (31.1%) | 171 (44.2%) | |
| pT stage | <0.001 | ||
| 1 | 2 (0.2%) | 0 (0.0%) | |
| 2 | 262 (20.7%) | 39 (10.1%) | |
| 3 | 345 (27.3%) | 111 (28.7%) | |
| 4 | 655 (51.8%) | 237 (61.2%) | |
| pTNM stage | <0.001 | ||
| I | 126 (10.0%) | 14 (3.6%) | |
| II | 399 (31.6%) | 86 (22.2%) | |
| III | 739 (58.5%) | 287 (74.2%) | |
Mean±SD/N (%). Differences are compared using the chi-square test (or Fisher's exact test) for categorical measures and Kruskal−Wallis test for continuous measures.