Table 1.
Patients: all patients, patients according to training set or test set and comparison of the composition ratio between groups.
| Features | All patients, n(%) | Training set, n(%) | Test set, n(%) | P value |
|---|---|---|---|---|
| Age(y) | 48.00(23.00,88.00) | 47.00(23.00,88.00) | 51.58±10.30 | 0.097 |
| Quantity | 0.639 | |||
| Single | 617(83.04) | 437(83.56) | 180(81.82) | |
| Multiple | 126(16.95) | 86(16.44) | 40(18.18) | |
| Shape | 0.971 | |||
| Oval, round | 89(11.98) | 62(11.85) | 27(12.27) | |
| Irregular | 654(88.02) | 461(88.15) | 193(87.73) | |
| Orientation | 1.000 | |||
| Parallel | 473(63.66) | 333(63.67) | 140(63.64) | |
| Not parallel | 270(36.34) | 190(36.33) | 80(36.36) | |
| Margin contour | 0.974 | |||
| Smooth | 52(7.00) | 36(6.88) | 16(7.27) | |
| Lobulate | 120(16.15) | 84(16.06) | 36(16.36) | |
| Angular, Spiculate | 571(76.85) | 403(77.06) | 168(76.37) | |
| Margin | 0.980 | |||
| Circumscribed | 56(7.54) | 40(7.54) | 16(7.27) | |
| Not circumscribed | 687(92.46) | 483(92.46) | 204(92.73) | |
| Boundary | 0.728 | |||
| Abrupt interface | 367(49.39) | 261(49.90) | 106(48.18) | |
| Echogenic halo | 376(50.61) | 262(50.10) | 114(51.12) | |
| Main posterior echo | 0.868 | |||
| Shadowing | 317(42.66) | 220(42.07) | 97(44.09) | |
| Indifferent | 413(55.59) | 294(56.21) | 119(54.09) | |
| Enhancement | 13(1.75) | 9(1.72) | 4(1.82) | |
| Microcalcification | 0.799 | |||
| Preserved | 409(55.05) | 295(56.41) | 114(51.82) | |
| Absent | 334(44.95) | 228(43.59) | 106(48.18) | |
| Echogenicity pattern | 0.726 | |||
| Hypoechoic | 717(96.50) | 506(96.75) | 211(95.91) | |
| Other echo | 26(3.50) | 17(3.25) | 9(4.09) | |
| CDFI | 0.885 | |||
| Adler 0,1 | 274(36.88) | 192(36.71) | 82(37.27) | |
| Adler 2,3 | 469(63.12) | 331(63.29) | 138(62.73) | |
| US tumour size(mm) | 22,00(5.00,140.00) | 22,00(5.00,140.00) | 22.00(7.00,75.00) | 0.460 |
| ER | 0.135 | |||
| Negative | 230(30.96) | 171(32.70) | 59(26.82) | |
| Positive | 513(69.04) | 352(67.30) | 161(73.18) | |
| PR | 0.118 | |||
| Negative | 311(41.86) | 229(43.79) | 82(37.27) | |
| Positive | 432(58.14) | 294(56.21) | 138(62.73) | |
| HER-2 | 0.473 | |||
| Negative | 532(71.60) | 379(72.47) | 153(69.55) | |
| Positive | 211(28.40) | 144(27.53) | 67(30.45) | |
| Ki-67 | 0.590 | |||
| Negative | 231(31.09) | 159(30.40) | 72(32.73) | |
| Positive | 512(68.91) | 364(69.60) | 148(67.27) | |
| US of lymph node | 0.472 | |||
| No lymph nodes found | 311(41.86) | 214(40.92) | 98(44. 55) | |
| Lymph nodes found | 432(58.14) | 309(59.08) | 122(55.45) | |
| Aspect ratio | 0.625 | |||
| No lymph nodes found | 318(42.80) | 214(40.92) | 98(44.55) | |
| Aspect ratio≥2 | 151(20.32) | 111(21.22) | 40(18.18) | |
| Aspect ratio<2 | 274(36.88) | 198(37.86) | 82(37.27) | |
| Cortical thickness | 0.259 | |||
| No lymph nodes found | 311(41.86) | 214(40.92) | 98(44.55) | |
| Thickness<3 mm | 168(22.61) | 118(22.56) | 50(22.73) | |
| Symmetric thickness≥3 mm | 27(3.63) | 18(3.44) | 8(3.64) | |
| Asymmetric thickness≥3 mm | 237(31.90) | 173(33.08) | 64(29.08) | |
| Central hilum | 0.573 | |||
| No lymph nodes found | 305(41.05) | 214(40.92) | 98(44.55) | |
| Preserved | 192(25.84) | 140(26.77) | 45(20.45) | |
| Partially absent | 107(14.40) | 70(13.38) | 37(16.82) | |
| Completely absent | 139(18.71) | 99(18.93) | 40(18.18) | |
| Pathological results of ALNs | 0.455 | |||
| Negative | 371(49.93) | 256(48.95) | 115(52.27) | |
| Positive | 372(50.07) | 267(51.05) | 105(47.73) |