Table 1 Demographics and baseline characteristics (n = 342)
Characteristic | No. (%) |
|---|---|
Age, years (range) | |
Median | 69 |
Range | 27–95 |
< 65 | 124 (36) |
Sex | |
Male | 179 (52) |
Female | 163 (48) |
Primary tumour location | |
Ascending colon | 94 (27) |
Transverse colon | 36 (11) |
Descending and sigmoid colon | 135 (39) |
Upper rectum* | 77 (23) |
Disease stage at diagnosis | |
I | 88 (26) |
II | 142 (41) |
III | 112 (33) |
T stage | |
T1 | 54 (16) |
T2 | 48 (14) |
T3 | 211 (62) |
T4 | 29 (8) |
N stage | |
N0 | 230 (67) |
N+ | 112 (33) |
Histologic grade | |
Well differentiated | 92 (27) |
Moderately differentiated | 223 (65) |
Poorly differentiated | 16 (5) |
Mucinous/undifferentiated | 11 (3) |
Vascular emboli and lymphatic invasion | |
Present | 172 (51) |
Absent | 170 (49) |
Perforation | |
Present** | 8 (2) |
Absent | 334 (98) |
