Table 1 Clinical data analysis
| Parameter | No. of patients | P-value |
|---|---|---|
| Gender | ||
| Male | 26 | 0.5366 |
| Female | 18 | |
| Age (years) | ||
| < 60 | 28 | 0.0827 |
| ≥ 60 | 16 | |
| Tumor size (cm) | ||
| < 4 | 37 | 0.0579 |
| ≥ 4 | 7 | |
| Differentiation grade | ||
| Well-moderate | 19 | 0.0016** |
| Poor-undifferentiation | 25 | |
| Lymph node status | ||
| Negative | 21 | 0.5411 |
| Positive | 23 | |
| TNM stage | ||
| I–II | 27 | 0.1432 |
| III–IV | 17 | |