Variable | N (%) | 5-year OS (95% CI) | p-value | |
---|---|---|---|---|
N (1st episode) | n = 856 | |||
Sex | Male | 402 (47.0) | 82 (73.5, 91.5) | 0.4 |
Female | 454 (53.0) | 86 (80.2, 92.2) | ||
Age at first surgery | < 60 | 146 (17.1) | 91.5 (82.9, 100) | < 0.001 |
60–79 | 424 (49.5) | 91.3 (87.1, 95.7) | ||
≥ 80 | 286 (33.4) | 65.4 (51.1, 83.7) | ||
N (All episodes) | n = 862 | |||
Tumour site | Caecum | 143 (16.6) | 77.4 (67.4, 89) | < 0.001 |
Ascending colon | 172 (20.0) | 69 (51.4, 92.6) | ||
Hepatic flexure | 61 (7.1) | 92.4 (82.8, 100) | ||
Transverse colon | 130 (15.1) | 83 (72.9, 94.6) | ||
Splenic flexure | 43 (5.0) | n/a | ||
Descending colon | 33 (3.8) | n/a | ||
Sigmoid colon | 217 (25.2) | 98.9 (97.3, 100) | ||
Rectosigmoid | 63 (7.3) | 82.8 (68.6, 100) | ||
T stage | 0–2 | 327 (37.9) | 93.3 (88.9, 97.9) | < 0.001 |
3 | 451 (52.3) | 80.4 (71.5, 90.4) | ||
4 | 84 (9.7) | n/a | ||
N stage | 0 | 619 (71.8) | 85.2 (79, 91.9) | 0.01 |
1 | 165 (19.1) | 85.3 (74.2, 98.1) | ||
2 | 78 (9.0) | 71.2 (57.4, 88.4) | ||
ASA | 1 | 151 (17.5) | 95.9 (90.0, 100) | < 0.001 |
2 | 348 (40.4) | 91.0 (86.6, 95.7) | ||
3 | 315 (36.5) | 73.7 (60.2, 90.3) | ||
4 | 47 (5.5) | 46.1 (28.9, 73.6) | ||
Pathological grade | Undifferentiated | 5 (0.6) | n/a | 0.009 |
Poor differentiation | 164 (19.0) | 74.7 (64.5, 86.6) | ||
Moderate differentiation | 579 (67.2) | 85.3 (78.1, 93) | ||
Well differentiated | 47 (5.5) | 91.7 (77.3, 100) | ||
LVI | No | 591 (68.6) | 84.9 (78.5, 91.8) | 0.02 |
Yes | 244 (28.3) | 81.7 (74.6, 89.4) | ||
CRM | Negative > 1 mm | 465 (53.9) | 79.6 (69.3, 91.4) | 0.4 |
Positive ≤1 mm | 8 (0.9) | n/a | ||
Not reported | 375 (43.5) | 86.6 (81.8, 91.6) | ||
LNY | <12 | 168 (19.5) | 85.4 (78.6, 92.9) | 0.5 |
≥12 | 694 (80.5) | 83.4 (76.7, 90.6) | ||
LNR groups | < 0.05 | 655 (76.0) | 85.8 (79.8, 92.3) | < 0.001 |
0.05 to < 0.2 | 128 (14.8) | 90.7 (82.8, 99.4) | ||
≥0.2 | 78 (9.0) | 61.3 (45.3, 82.9) | ||
LODDS | <−1.36 | 569 (66.0) | 84.5 (77.6, 92.1) | < 0.001 |
−1.36 to −0.53 | 217 (25.2) | 91.0 (85.7, 96.6) | ||
> − 0.53 | 75 (8.7) | 61.1 (44.9, 83.2) |