1.
Baseline characteristics of metastatic gastric cancer patients who underwent systemic chemotherapy
| Variables | All (N=618)
[n (%)] |
n (%) | ||||||
| Before PSM | After PSM | |||||||
| Conversion surgery (N=95) | Chemotherapy alone (N=523) | P | Conversion surgery (N=95) | Chemotherapy alone (N=95) | P | |||
| Age (year) | 0.200 | |||||||
| ≥65 | 99 (16.0) | 15 (15.8) | 84 (16.1) | 15 (15.8) | 22 (23.2) | |||
| <65 | 519 (84.0) | 80 (84.2) | 439 (83.9) | 80 (84.2) | 73 (76.8) | |||
| Sex ratio (M:F) | 398:220 | 67:28 | 331:192 | 0.175 | 67:28 | 68:27 | 0.873 | |
| PS | 0.726 | 0.388 | ||||||
| ≥2 | 58 (9.4) | 8 (8.4) | 50 (9.6) | 8 (8.4) | 5 (5.3) | |||
| <2 | 560 (90.6) | 87 (91.6) | 473 (90.4) | 87 (91.6) | 90 (94.7) | |||
| Tumor size (cm) | 0.356 | 0.194 | ||||||
| ≥7 | 197 (37.5) | 36 (41.9) | 161 (36.6) | 36 (41.9) | 25 (32.5) | |||
| <7 | 329 (62.5) | 50 (58.1) | 279 (63.4) | 50 (58.1) | 52 (67.5) | |||
| Tumor location | 0.561 | 0.240 | ||||||
| Cardia | 218 (35.3) | 36 (37.9) | 182 (34.8) | 36 (37.9) | 44 (46.3) | |||
| Noncardia | 400 (64.7) | 59 (62.1) | 341 (65.2) | 59 (62.1) | 51 (53.7) | |||
| Tumor differentiation | 0.083 | 0.644 | ||||||
| Poorly differentiated | 500 (83.9) | 74 (77.9) | 426 (85.0) | 74 (77.9) | 66 (75.0) | |||
| Table 1 (continued) | ||||||||