An endorectal ultrasound-based radiomics signature for preoperative prediction of lymphovascular invasion of rectal cancer

Table 1 Clinical and pathological information on rectal cancer

Variable	Training set (n = 143)	Validation set (n = 60)	p value
Age			0.101
< 60 years	63 (44.1%)	34 (56.7%)
≥ 60 years	80 (55.9%)	26 (43.3%)
Sex			0.632
Female	60 (42%)	23 (38.3%)
Male	83 (58%)	37 (61.7%)
Tumor maximum diameter			0.999
≤ 3 cm	31 (21.7%)	13 (21.7%)
> 3 cm	112 (78.3%)	47 (78.3%)
Tumor thickness diameter			0.442
≤ 1 cm	18 (12.6%)	10 (16.7%)
> 1 cm	125 (87.4%)	50 (83.3%)
T stage			0.242
T1–2	29 (20.3%)	8 (13.3%)
T3–4	114 (79.7%)	52 (86.7%)
N stage			0.558
N0	85 (59.4%)	33 (55%)
N1–2	58 (40.6%)	27 (45%)
CEA			0.213
Negative	77 (53.8%)	38 (63.3%)
Positive	66 (46.2%)	22 (36.7%)
CA199			0.824
Negative	114 (79.7%)	47 (78.3%)
Positive	29 (20.3%)	13 (21.7%)
CA125			0.588
Negative	132 (92.3%)	54 (90%)
Positive	11 (7.7%)	6 (10%)
CA242			0.871
Negative	97 (67.8%)	40 (66.7%)
Positive	46 (32.2%)	20 (33.3%)
CA724			0.709
Negative	116 (81.1%)	50 (83.3%)
Positive	27 (18.9%)	10 (16.7%)
LVI			0.465
Negative	118 (82.5%)	52 (86.7%)
Positive	25 (17.5%)	8 (13.3%)

ISSN: 1471-2342