Table 1. Patient and tumor characteristics.
| Total | C | CRT | CCRT | P-value | |
|---|---|---|---|---|---|
| N | 115 | 65 | 23 | 27 | |
| Male | 62 (54%) | 36 (55%) | 12 (52%) | 14 (52%) | 0.937 |
| Female | 53 (46%) | 29 (45%) | 11 (48%) | 13 (48%) | |
| Mean age | 64 | 66 | 62 | 62 | 0.068 |
| Mean CA 19-9 | 1,348 | 1,790 | 753 | 545 | 0.308 |
| Mean tumor size | 3.9 cm | 3.6 cm | 3.9 cm | 4.4 cm | 0.169 |
| Borderline resectable (T3 with vessel involvement) | 58 (51%) | 33 (51%) | 10 (43%) | 15 (56%) | 0.694 |
| Locally advanced (T4) | 57 (49%) | 32 (49%) | 13 (57%) | 12 (44%) | |
| Margin-negative resection | 10 (9%) | 4/65 (6%) | 2/23 (9%) | 4/27 (15%) | 0.406 |
| T3 Disease initially | 8/58 (14%) | 4/33 (12%) | 2/10 (20%) | 2/15 (13%) | 0.817 |
| T4 Disease initially | 2/57 (4%) | 0/32 (0%) | 0/13 (0%) | 2/12 (17%) | 0.021 |
P-Values correspond to Chi-square tests of each variable. C, Chemotherapy; CRT, Chemoradiation therapy; CCRT, Chemotherapy followed by chemoradiation therapy