Table 1 Clinical characteristics of patients included in the analysis
From: Prediction of distant metastasis in esophageal cancer using a radiomics–clinical model
Characteristics | Primary cohort | Validation cohort | ||||||
|---|---|---|---|---|---|---|---|---|
M0a | M1b | χ2 | P | M0a | M1b | χ2 | P | |
Subjects | 131 | 76 | 66 | 26 | ||||
Age | ||||||||
≥ 70 | 49(37.40%) | 18(23.68%) | 25(37.88%) | 8(30.77%) | ||||
69–60 | 56(42.75%) | 26(34.21%) | 30(45.45%) | 10(38.46%) | ||||
< 60 | 26(19.85%) | 32(42.11%) | 12.190 | 0.002 | 11(16.67%) | 8(30.77%) | 2.269 | 0.322 |
Length | ||||||||
≤ 4 cm | 40(30.53%) | 18(23.68%) | 18(27.27%) | 9(34.62%) | ||||
> 4 cm | 91(69.47%) | 58(76.32%) | 1.120 | 0.290 | 48(72.73%) | 17(65.38%) | 0.485 | 0.486 |
Gender | ||||||||
Female | 30(22.90%) | 11(14.47%) | 8(12.12%) | 6(23.08%) | ||||
Male | 101(77.10%) | 65(85.53%) | 2.150 | 0.143 | 58(87.88%) | 20(76.92%) | 1.735 | 0.188 |
Pathological grading | ||||||||
Gx | 73(55.73%) | 41(53.95%) | 31(46.97%) | 13(50.00%) | ||||
G1/G2 | 41(31.30%) | 4(5.26%) | 25(37.88%) | 5(19.23%) | ||||
G3 | 17(12.98%) | 31(40.79%) | 31.069 | 0.000 | 10(15.15%) | 8(30.77%) | 4.350 | 0.114 |
Stage_T | ||||||||
T1/T2 | 14(10.69%) | 3(3.95%) | 11(16.67%) | 1(3.85%) | ||||
T3/T4 | 117(89.31%) | 73(96.05%) | 2.898 | 0.089 | 55(83.33%) | 25(96.15%) | 2.703 | 0.100 |
Stage_N | ||||||||
N0 | 52(39.69%) | 4(5.26%) | 27(40.91%) | 2(7.69%) | ||||
N1 | 44(33.59%) | 27(35.53%) | 22(33.33%) | 12(46.15%) | ||||
N3/N2 | 35(26.72%) | 45(59.21%) | 34.269 | 0.000 | 17(25.76%) | 12(46.15%) | 9.820 | 0.007 |
Histology | ||||||||
Squamous | 117(89.31%) | 63(82.89%) | 1.747 | 0.186 | 61(92.42%) | 21(80.77%) | 2.615 | 0.106 |
Others | 14(10.69%) | 13(17.11%) | 5(7.58%) | 5(19.23%) | ||||
Tumor site | ||||||||
Upper | 19(14.50%) | 12(15.79%) | 3(4.55%) | 6(23.08%) | ||||
Middle | 51(38.93%) | 28(36.84%) | 22(33.33%) | 4(15.38%) | ||||
Lower | 61(46.56%) | 36(47.37%) | 0.115 | 0.944 | 41(62.12%) | 16(61.54%) | 8.675 | 0.013 |