Table 2.
The characteristics of CRLM patients in early and advanced T classification.
| Risk Factors | N (%) |
T1/2 classificationa n (%) |
T3/4 classificationa n (%) |
Pb |
|---|---|---|---|---|
| Total | 5,618 | 591(10.52) | 5,027(89.48) | |
| Age | 0.628 | |||
| ≤ 60 yrs | 2,932(52.19) | 306(51.78) | 2,626(52.24) | |
| >60 yrs | 2,686(47.81) | 285(48.22) | 2,401(47.76) | |
| Gender | 0.158 | |||
| Female | 2,281(40.60) | 224(37.90) | 2,057(40.92) | |
| Male | 3,227(59.40) | 367(61.10) | 2,970(59.08) | |
| Race | 0.246 | |||
| White | 4,198(74.72) | 425(7.91) | 3,733(74.05) | |
| Black | 874(15.56) | 101(17.09) | 773(15.38) | |
| Other | 546(9.72) | 65(11.00) | 481(9.57) | |
| Marriage | ||||
| Married | 3,196(56.89) | 321(54.31) | 2,875(57.19) | 0.425 |
| Divorced | 1,054(18.76) | 110(18.61) | 944(18.78) | |
| Single | 1,114(19.83) | 130(22.00) | 984(19.57) | |
| Unknown | 254(4.52) | 38(5.88) | 224(4.46) | |
| Location | 0.000 | |||
| Colon | 4,650(82.77) | 409(69.20) | 4,650(82.77) | |
| Rectum | 968(17.23) | 182(30.80) | 968(17.23) | |
| Histology | 0.001 | |||
| Adenocarcinoma | 5,285(94.07) | 575(97.29) | 4,710(93.69) | |
| Mucinous adenocarcinoma | 316(5.62) | 14(2.37) | 302(6.01) | |
| Signet ring cell carcinoma | 17(0.30) | 2(0.34) | 15(0.30) | |
| Differential grade | 0.000 | |||
| Well | 227(4.84) | 42(7.11) | 185(3.68) | |
| Moderate | 4,131(73.53) | 471(79.70) | 3,660(75.44) | |
| Poor/Undifferentiated | 1,260(22.43) | 78(13.20) | 1,182 (23.51) | |
| N-classification | 0.000 | |||
| N0 | 1,331(23.69) | 349(59.05) | 982(20.02) | |
| N1 | 2,252(40.09) | 203(34.35) | 2,049(40.76) | |
| N2 | 2,035(36.22) | 39(6.60) | 1,996(39.71) | |
| CEA c | 0.000 | |||
| Negative | 784(13.96) | 59(9.98) | 725(14.42) | |
| Positive | 3,336(59.38) | 394(66.67) | 2,942(58.52) | |
| Unknown | 1,498(26.66) | 138(23.35) | 1,360(27.05) |
CRLM, metastatic liver colorectal cancer; CEA, carcinoembryonic antigen.
a
T classification was classified as T1, T2, T3, T4 subgroups and N classification was classified as N0, N1, N2 according to the 7th AJCC TNM staging system.
b
P values were calculated using Chi-Squared tests.
c
The reference value of CEA : nonsmoker <2.5ng/ml; smoker <5ng/ml.