Table II.
Clinicopathologic characteristics of patients with colorectal adenocarcinoma in the training cohort and validation cohort.
| Clinicopathologic variable | Training cohort (n) (n=180) | Validation cohort (n) (n=150) | P-value |
|---|---|---|---|
| Sex | |||
| Female | 75 | 65 | 0.760 |
| Male | 105 | 85 | |
| Age (years) | |||
| ≤60 | 89 | 70 | 0.615 |
| >60 | 91 | 80 | |
| CEA (ng/ml) | |||
| ≤5 | 110 | 98 | 0.429 |
| >5 | 70 | 52 | |
| Tumor differentiation | |||
| I/II | 83 | 67 | 0.454 |
| III/IV | 97 | 83 | |
| Tumor site | |||
| Colon | 78 | 64 | 0.903 |
| Rectum | 102 | 86 | |
| Tumor size | |||
| ≤5 cm | 94 | 88 | 0.241 |
| >5 cm | 86 | 62 | |
| pT stage | |||
| T1/T2 | 56 | 34 | 0.086 |
| T3/T4 | 124 | 116 | |
| pN stage | |||
| N0 | 85 | 63 | 0.342 |
| N+ | 95 | 87 | |
| Lymphatic/microvascular/ | |||
| nerve invasion | |||
| Negative | 81 | 61 | 0.429 |
| Positive | 99 | 89 | |
| Mesenteric tumor | |||
| deposit formation | |||
| Negative | 114 | 91 | 0.619 |
| Positive | 66 | 59 | |
| Distant metastasis | |||
| Negative | 98 | 83 | 0.872 |
| Positive | 82 | 67 |
Distant metastasis was identified during postoperative follow-up. CEA, carcinoembryonic antigen.