Table 1.
Characteristics of the patients and tumors
| Group |
||||
|---|---|---|---|---|
| Metastatic | Primary | Adjuvant | ||
| Age | N | 449 | 253 | 130 |
| Median | 68.8 | 68.6 | 68.2 | |
| Range | 35.9-89.1 | 35.6-88.8 | 44.5-87.5 | |
| Missing | 0 | 1 (0.4) | 0 | |
| >75 years | n (%) | 93 (21) | 72 (28) | 33 (25) |
| Sex | ||||
| Female | n (%) | 204 (45) | 133 (52) | 61 (47) |
| Male | n (%) | 245 (55) | 121 (48) | 69 (53) |
| ECOG PS | ||||
| 0 | n (%) | 222 (51) | 134 (53) | 80 (62) |
| 1 | n (%) | 177 (41) | 106 (42) | 37 (29) |
| 2 | n (%) | 36 (8) | 10 (4) | 12 (9) |
| 3 | n (%) | 2 (<1) | 1 (<1) | 0 |
| Missing | 12 (2.7) | 3 (1.2) | 1 (0.8) | |
| CA19.9 | n | 408 | 232 | 110 |
| Median | 759.5 | 336.5 | 28.5 | |
| Q1–Q3 | 80.5-6880.0 | 62.5-1348.5 | 10.0-192.0 | |
| Missing | 41 (9.1) | 22 (8.7) | 20 (15.4) | |
| Stage | ||||
| I-II | n (%) | 0 | 96 (43) | 96 (74) |
| III | n (%) | 0 | 126 (57) | 34 (26) |
| IV | n (%) | 449 (100) | 0 (0) | 0 (0) |
| Missing | 0 | 32 (12.6) | 0 (0) | |
| Site of disease | ||||
| Head | n (%) | 201 (59) | 173 (74) | 73 (76) |
| Body | n (%) | 137 (34) | 64 (27) | 16 (17) |
| Tail | n (%) | 132 (33) | 21 (9) | 16 (17) |
| Missing | 50 (11.1) | 19 (7.5) | 34 (26.2) | |
| Site of metastasis | ||||
| Liver | n (%) | 301 (76) | NA | NA |
| Lymph nodes | n (%) | 128 (32) | NA | NA |
| Lung | n (%) | 92 (23) | NA | NA |
| Other site | n (%) | 84 (21) | NA | NA |
| Missing | 54 (12.0) | 0 | 0 | |
ECOG PS, Eastern Cooperative Oncology Group performance status; NA, not applicable.