Table 2.
Correlations between characteristics of patients with liver metastasis in the training and testing groups
| Characteristics | Training set (%) | Testing set (%) | ||||
|---|---|---|---|---|---|---|
| Negative | Positive | P | Negative | Positive | P | |
| Age | 62.18 ± 13.77 | 61.67 ± 14.86 | 0.560 | 62.41 ± 13.62 | 62.10 ± 11.96 | 0.802 |
| Sex | < 0.001 | 0.004 | ||||
| Male | 1238(48.9) | 193(60.3) | 408(48.6) | 69(63.3) | ||
| Female | 1291(51.1) | 127(39.7) | 431(51.4) | 40(36.7) | ||
| Marriage | 0.254 | 0.818 | ||||
| Married | 1442(57.0) | 167(52.1) | 474(56.4) | 60(55.0) | ||
| Unmarried | 960(37.9) | 136(42.5) | 308(36.7) | 43(39.4) | ||
| Unknown | 127(5.1) | 17(5.4) | 57(6.9) | 6(5.6) | ||
| Race | 0.144 | < 0.001 | ||||
| White | 1695(67.0) | 214(66.8) | 556(66.2) | 69(63.4) | ||
| Black | 451(17.8) | 68(21.2) | 145(17.2) | 20(18.3) | ||
| Others | 383(15.2) | 38(12.0) | 138(16.6) | 20(18.3) | ||
| Tumor location | < 0.001 | < 0.001 | ||||
| Stomach | 1026(40.5) | 93(29.0) | 357(42.5) | 33(30.2) | ||
| Duodenum | 140(5.5) | 18(5.6) | 51(6.0) | 4(3.6) | ||
| Jejunum | 186(7.3) | 22(6.8) | 59(7.0) | 5(4.5) | ||
| Ileum | 83(3.2) | 3(0.9) | 16(2.1) | 2(1.8) | ||
| Colon | 51(2.0) | 9(2.8) | 18(2.1) | 1(0.9) | ||
| Rectum | 75(2.9) | 4(1.2) | 23(2.7) | 2(1.8) | ||
| Others | 266(10.5) | 74(23.1) | 85(10.1) | 32(29.1) | ||
| Unknown | 702(28.1) | 97(30.6) | 228(27.5) | 32(29.1) | ||
| Tumor size | < 0.001 | < 0.001 | ||||
| ≤ 2 cm | 338(13.3) | 18(5.6) | 86(10.2) | 4(3.6) | ||
| 2–5 cm | 755(29.8) | 42(13.1) | 256(30.5) | 13(11.9) | ||
| 5–10 cm | 766(30.2) | 73(22.8) | 221(26.3) | 28(25.6) | ||
| > 10 cm | 534(21.1) | 111(34.6) | 215(25.6) | 36(33.3) | ||
| Unknown | 136(5.6) | 76(23.9) | 61(7.4) | 28(25.6) | ||
| N stage | < 0.001 | < 0.001 | ||||
| N0 | 2412(95.3) | 246(77.0) | 791(94.2) | 82(75.2) | ||
| N1 | 60(2.4) | 37(11.5) | 28(3.3) | 6(5.5) | ||
| Unknown | 57(2.3) | 37(11.5) | 20(2.5) | 21(19.3) | ||
| Mitotic rate | < 0.001 | < 0.001 | ||||
| < 5/50HPFs | 1329(52.5) | 57(17.5) | 428(51.0) | 21(19.2) | ||
| ≥ 5/50HPFs | 557(22.0) | 53(16.5) | 187(22.2) | 17(15.5) | ||
| Unknown | 643(25.5) | 210(66.0) | 224(26.8) | 71(65.3) | ||
HPFs high power fields