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Chi-square analysis of the clinicopathological characteristics between clusters.
| Characteristics | χ2 | p |
|---|---|---|
| OS | 0.135 | 0.7134 |
| PFS | 0.024 | 0.8767 |
| pT | 4.993 | 0.0254 |
| pN | 0.067 | 0.7955 |
| HG | 0.244 | 0.6217 |
| VI | 2.926 | 0.0872 |
| TNM stage | 0.224 | 0.6360 |
| Tumor length | 14.262 | 0.0002 |
OS, overall survival; PFS, progression-free survival; pT, pathological T stage, pN, pathological N stage, HG, histological grade, VI, vascular invasion.
