Characteristics | Training set, n = 143 | Internal validation set, n = 62 | p value |
---|---|---|---|
Distribution | 0.007 | ||
Unilateral | 77 (53.85) | 21 (33.87) | |
Bilateral | 66 (46.15) | 41 (66.13) | |
Mass feature | 0.8876 | ||
Solid | 79 (55.24) | 34 (54.84) | |
Complex cystic and solid | 40 (27.97) | 16 (25.81) | |
Mainly cystic | 24 (16.78) | 12 (19.35) | |
Relationship between the sigmoid colon/rectum and mass | 0.9504 | ||
0 (clear, a hook edge existed) | 27 (18.88) | 11 (17.74) | |
The hook edge disappeared | |||
1 (Close) | 19 (13.29) | 7 (11.29) | |
2 (Bridge sign) | 61 (42.66) | 29 (46.77) | |
3 (Fusion) | 36 (25.17) | 15 (24.19) | |
Bladder invaded | 0.4569 | ||
No | 132 (92.31) | 59 (95.16) | |
Yes | 11 (7.69) | 3 (4.84) | |
Metastases of distant organs | 0.7651 | ||
No | 131 (91.61) | 56 (90.32) | |
Yes | 12 (8.39) | 6 (9.68) | |
Diaphragmatic metastasis | 0.8327 | ||
No | 99 (69.23) | 42 (67.74) | |
Yes | 44 (30.77) | 20 (32.26) | |
Nodules or masses implanted on the omentum/ peritoneum | 0.9487 | ||
No | 34 (23.78) | 15 (24.19) | |
Yes | 109 (76.22) | 47 (75.81) | |
Hydroureter | 0.385 | ||
No | 141 (98.6) | 60 (96.77) | |
Yes | 2 (1.4) | 2 (3.23) | |
Retroperitoneal lymphadenectasis | 0.2928 | ||
No | 131 (91.61) | 60 (96.77) | |
Yes | 12 (8.39) | 2 (3.23) | |
Amount of ascites | 0.9733 | ||
No ascites or small | 55 (38.46) | 24 (38.71) | |
Medium to large | 88 (61.54) | 38 (61.29) |