Table 1.
Basic demographic data for the study groups of patients with colorectal cancer
| Number | 362 | 137 | 475 |
| Mean age-years | 69 (± 12) | 70 (± 11) | 69 (± 13) |
| Age range-years | 29 to 93 | 38 to 93 | 32 to 95 |
| Sex ration M:F | 1.3:1 | 1.4:1 | 1.4:1 |
| ASA score of 3 or 4 | 40% | 39% | 22% |
| Elective vs emergency | 319 vs 43 | 112 vs 25 | 394 vs 81 |
| procedures | (88% vs 12%) | (78% vs 18%) | (79% vs 17%) |
| Curative vs palliative | 264 vs 80 | 101 vs 23 | 366 vs 85 |
| pesections | (73% vs 22%) | (74% vs 17%) | (77% vs 18%) |
| No surgery | 18 (5%) | 13 (9%) | 24 (5%) |
| Colon cancer | 170 (47%)a | 90 (66%) | 314 (66%) |
| Rectal cancer | 192 (53%)b | 47 (34%) | 161 (34%) |
| Adjuvant chemotherapy | 116 (32%)c | 19 (14%) | 17 (4%) |
| Adjuvant radiotherapy | 65 (18%)d | 9 (7%) | 14 (4%) |
| Mean follow-up-years | 2.75 (± 1.2)e | 4.5 (± 1.4) | 5.1 (± 4.5) |
| Max follow-up-years | 6.8 | 6.9 | 13.9 |
a
P < 0.05,
b
P < 0.05,
c
P < 0.05,
d
P < 0.05,
e
P < 0.05, fP < 0.05 vs the other two group.