Table 1.
Distribution of selected variables in metastases and nonmetastases patients
| Variables | Nonmetastases, n | Metastases, n | Pa |
| Sex | 0.915 | ||
| Female | 70 (32.7%) | 25 (32.1%) | |
| Male | 144 (67.3%) | 53 (67.9%) | |
| Age | 0.931 | ||
| ≤60 years | 114 (53.3%) | 42 (53.8%) | |
| >60 years | 100 (46.7%) | 36 (46.2%) | |
| Colorectal tumor size | 0.180 | ||
| ≤4 cm | 99 (46.3%) | 43 (55.1%) | |
| >4 cm | 115 (53.7%) | 35 (44.9%) | |
| Colorectal tumor locationb | 0.299 | ||
| Proximal colon | 72 (34.1%) | 31 (40.8%) | |
| Distal colorectum | 139 (65.9%) | 45 (59.2%) | |
| Colorectal tumor gradeb | 0.168 | ||
| Well | 43 (20.4%) | 8 (10.7%) | |
| Moderately | 109 (51.6%) | 43 (57.3%) | |
| Poorly | 59 (28.0%) | 24 (32.0%) | |
| Depth of tumor invasionbc | 0.004 | ||
| T1 or T2 | 71 (33.8%) | 13 (16.7%) | |
| T3 or T4 | 139 (66.2%) | 65 (83.3%) | |
| Lymph node metastasisb | <0.001 | ||
| Negative | 131 (63.9%) | 21 (30.9%) | |
| Positive | 74 (36.1%) | 47 (69.1%) | |
| p53 overexpressionb | 0.107 | ||
| Negative | 89 (54.6%) | 33 (43.4%) | |
| Positive | 74 (45.4%) | 43 (56.6%) | |
a
χ 2-test was used to test statistically significant differences between groups;
b
Numbers not add up to the total, owing to missing data;
c
Depth of tumor invasion corresponds to the T (tumor) description according to the TNM (tumor-nodes-metastasis) classification