Table 1.
Clinical Characteristics and Association with cfDNA Concentrations of Patients with Colorectal Cancer
| Clinical Characteristics | N | cfDNA Concentrations (ng/mL) | P value |
|---|---|---|---|
| Age | 0.85 | ||
| ≤60 | 29 | 466.9±86.72 | |
| >60 | 21 | 337.1±29.93 | |
| Gender | 0.45 | ||
| Male | 33 | 420.40±69.16 | |
| Female | 17 | 396.90±77.41 | |
| Tumor Site | |||
| Left-sided colon | 11 | 668.50±166.70 | P<0.001 |
| Right-sided colon | 15 | 473.70±95.68 | 0.18 |
| Rectum | 24 | 256.70±25.15 | 0.05 |
| Stage | 0.78 | ||
| I | 6 | 336.00±19.49 | |
| II | 23 | 433.10±95.77 | |
| III/IV | 21 | 411.60±68.84 | |
| Primary Tumor (T) | 0.21 | ||
| T1-2 | 11 | 314.50±29.7 | |
| T3 | 28 | 509.70±87.93 | |
| T4 | 11 | 262.70±34.11 | |
| Regional Lymph Nodes(N) | 0.562 | ||
| N0 | 29 | 413.00±76.06 | |
| N1-2 | 21 | 411.60±68.84 | |
| Distant Metastasis (M) | - | ||
| M0 | 49 | 412.2053.32 | |
| M1 | 1 | 422.00 |