Table 2. Kaplan-Meier survival analysis for colon cancer patients.
| Variable | Cases (n) | 5-year OS (%) | Survival months (Mean ± S.D.) | P value |
|---|---|---|---|---|
| Gender | ||||
| Female | 30 | 71.7% | 76.58 ± 5.05 | 0.629 |
| Male | 83 | 80.1% | 75.04 ± 3.02 | |
| Age (years) | ||||
| ≤ 62 | 57 | 90.5% | 84.24 ± 2.89 | 0.013* |
| > 62 | 56 | 63.6% | 64.57 ± 3.92 | |
| Serum CEA (ng/mL) | ||||
| ≤ 5 | 83 | 79.0% | 75.31 ± 2.98 | 0.950 |
| > 5 | 30 | 72.6% | 74.35 ± 5.31 | |
| Location | ||||
| Ascending | 46 | 68.0% | 67.53 ± 4.15 | 0.045* |
| Transverse | 16 | 72.7% | 73.92 ± 8.19 | |
| Descending/Sigmoid | 51 | 88.2% | 82.16 ± 3.11 | |
| Differentiation | ||||
| Well | 19 | 79.9% | 69.03 ± 6.22 | < 0.001* |
| Moderate | 86 | 83.3% | 80.26 ± 2.79 | |
| Poor | 8 | 18.2% | 46.31 ± 5.80 | |
| Largest diameter (cm) | ||||
| ≤ 5.0 | 74 | 76.8% | 76.39 ± 3.28 | 0.333 |
| > 5.0 | 39 | 79.3% | 73.37 ± 4.00 | |
| pT | ||||
| T1-T2 | 48 | 88.8% | 81.93 ± 2.93 | 0.036* |
| T3-T4 | 65 | 68.0% | 69.54 ± 3.94 | |
| pN | ||||
| N0 | 50 | 87.4% | 81.39 ± 3.39 | 0.001* |
| N1 | 40 | 77.6% | 76.01 ± 4.28 | |
| N2 | 23 | 56.3% | 59.91 ± 5.77 | |
| TNM stage | ||||
| Stage I/II | 50 | 87.4% | 81.39 ± 3.39 | 0.038* |
| Stage III | 63 | 70.9% | 70.93 ± 3.58 | |
| PPA1 expression | ||||
| Low | 58 | 93.0% | 82.04 ± 2.93 | 0.005* |
| High | 55 | 60.7% | 67.90 ± 4.07 |
* indicates statistically significant (P<0.05).