Table 1.
Baseline characteristics of final participant cohort (n = 326)
| Variable | Recurrence | No recurrence | Total | |
|---|---|---|---|---|
| Gender | Female | 25 (31) | 75 (31) | 100 (31) |
| Male | 56 (69) | 170 (69) | 226 (69) | |
| Age (years) | Mean ± SD | 70 ± 10 | 65 ± 11 | 66 ± 11 |
| Tumour location | Right colon | 24 (27) | 55 (23) | 79 (24) |
| Left colon | 22 (24) | 52 (21) | 74 (20) | |
| Rectum | 45 (49) | 138 (56) | 183 (56) | |
| Tumour size (mm) |
Median [IQR] Min, max |
40 [30, 50] 18, 75 |
40 [30, 50] 10, 150 |
40 [30, 50] 10,150 |
| T stage | T1 | 1 (1) | 11 (5) | 12 (4) |
| T2 | 12 (15) | 75 (31) | 87 (27) | |
| T3 | 45 (56) | 138 (55) | 183 (55) | |
| T4 | 23 (28) | 21 (9) | 44 (14) | |
| N stage | N0 | 38 (47) | 137 (56) | 175 (54) |
| N1 | 25 (32) | 73 (30) | 98 (30) | |
| N2 | 18 (21) | 35 (14) | 53 (16) | |
| Venous invasion | Present | 36 (44) | 57 (23) | 93 (28) |
| Absent | 45 (56) | 188 (77) | 233 (72) | |
| Resection margin | Involved | 3 (4) | 12 (5) | 15 (4) |
| Clear | 54 (67) | 183 (75) | 237 (73) | |
| Missing data | 24 (29) | 50 (20) | 74 (23) | |
Data provided are number (%) unless stated otherwise. Percentages provided are according to column data rather than row data. This allows comparison of the variable proportions within the recurrence, or no recurrence or total groups