Table 1.
Baseline Characteristics of Patients with Gallbladder Carcinoma from the SEER and Multicenter Database
| Variables | Frequency (%) | |
|---|---|---|
| SEER (2779) | Multicenter (591) | |
| Age | ||
| < 65 | 1130 (40.7%) | 314 (53.1%) |
| ≥ 65 | 1649 (59.4%) | 277 (46.9%) |
| Sex | ||
| Male | 835 (30.0%) | 209 (35.4%) |
| Female | 1944 (70.0%) | 382 (64.6%) |
| Race | ||
| White | 2100 (75.6%) | 0 |
| Black | 348 (12.5%) | 0 |
| Others | 331 (11.9%) | 591 (100%) |
| Vital Status | ||
| Dead | 1724 (62.0%) | 436 (73.8%) |
| Alive | 1055 (38%) | 155 (26.2%) |
| Grade | ||
| Well/moderate | 1525 (54.9%) | 360 (60.9%) |
| Poor/undifferentiated | 1038 (37.3%) | 231 (39.1%) |
| Unknown | 216 (7.8%) | 0 |
| T category(8th) | ||
| T1 | 377 (13.6%) | 91 (15.4%) |
| T2 | 1187 (42.7%) | 264 (44.7%) |
| T3 | 1083 (39.0%) | 210 (35.5%) |
| T4 | 132 (4.7%) | 26 (4.4%) |
| N category(8th) | ||
| N0 | 1381 (49.7%) | 337 (57.0%) |
| N1 | 1258 (45.3%) | 219 (37.1%) |
| N2 | 140 (5.0%) | 35 (5.9%) |
| Median (range) | 1 (0–22) | 2 (0–9) |
| No. of LN evaluationa | ||
| < 6 | 2130 (78.8%) | 413 (69.9%) |
| ≥ 6 | 573 (21.2%) | 178 (30.1%) |
| Median (range) | 2 (1–40) | 2 (1–24) |
| M category(8th) | ||
| M0 | 2290 (82.4%) | 483 (81.7%) |
| M1 | 489 (17.6%) | 108 (18.3%) |
| TNM Stage(8th) | ||
| I | 298 (10.7%) | 57 (9.6%) |
| II | 592 (21.3%) | 149 (25.2%) |
| IIIA | 326 (11.7%) | 62 (10.5%) |
| IIIB | 897 (32.3%) | 174 (29.4%) |
| IVA | 80 (2.9%) | 18 (3.0%) |
| IVB | 586 (21.1%) | 132 (22.3%) |
| Chemotherapy | ||
| Yes | 1183 (42.6%) | 317 (53.6%) |
| No/unknown | 1596 (57.4%) | 274 (46.4%) |
| Radiotherapy | ||
| Yes | 723 (26.0%) | 184 (31.1%) |
| No | 2056 (74.0%) | 407 (68.9%) |
a76 cases missing in the SEER database