Table 2.
Comparison of baseline data of CT features in training set, testing set and verification set (%)
| Features | Training set (n = 78) | Testing set (n = 32) | Validation set (n = 33) | P | |
|---|---|---|---|---|---|
| Tumor size | > 5 cm | 39(50) | 16(50) | 21(63.64) | 0.388 |
| ≤ 5 cm | 39(50) | 16(50) | 12(36.36) | ||
| Peritumoral satellite lesions | No | 66(84.62) | 26(81.25) | 24(72.73) | 0.343 |
| Yes | 12(15.38) | 6(18.75) | 9(27.27) | ||
| Tumor margin | Unsmooth | 62(79.49) | 24(75) | 31(93.94) | 0.103 |
| Smooth | 16(20.51) | 8(25) | 2(6.06) | ||
| Tumor capsule | None | 49(62.82) | 24(75) | 29(87.88) | 0.086 |
| Smooth | 7(8.97) | 2(6.25) | 0(0) | ||
| Unsmooth | 22(28.21) | 6(18.75) | 4(12.12) | ||
| Intratumoral necrosis | None | 20(25.64) | 11(34.38) | 5(15.15) | 0.305 |
| < 25% | 30(38.46) | 11(34.38) | 12(36.36) | ||
| 25–50% | 21(26.92) | 6(18.75) | 9(27.27) | ||
| 51–75% | 2(2.56) | 3(9.38) | 5(15.15) | ||
| > 75% | 5(6.41) | 1(3.13) | 2(6.06) | ||
| Bile duct dilatation | No | 67(85.9) | 29(90.63) | 22(66.67) | 0.020* |
| Yes | 11(14.1) | 3(9.38) | 11(33.33) | ||
| Enhancement mode | Wash in and wash out | 21(26.92) | 8(25) | 9(27.27) | 0.799 |
| Inhomogeneous enhancement | 51(65.38) | 19(59.38) | 21(63.64) | ||
| Persistent enhancement | 6(7.69) | 5(15.63) | 3(9.09) | ||
| Peritumoral enhancement in arterial phase | Yes | 28(35.9) | 11(34.38) | 14(42.42) | 0.759 |
| No | 50(64.1) | 21(65.63) | 19(57.58) | ||
| Large vein invasion | No | 63(80.77) | 27(84.38) | 19(57.58) | 0.015* |
| Yes | 15(19.23) | 5(15.63) | 14(42.42) | ||
| Lymph node enlargement | No | 65(83.33) | 30(93.75) | 19(57.58) | 0.001* |
| Yes | 13(16.67) | 2(6.25) | 14(42.42) |
*represents P < 0.05