Table 2.
Univariable and multivariable analyses of cancer-specific survival.
| Cancer-specific survival (competing risk) | ||||
|---|---|---|---|---|
| Characteristic | Univariable | Multivariable | ||
| SHR (95% CI) | P value | SHR (95% CI) | P value | |
| Age (years) | 1.002 (1.001-1.003) | <0.001∗ | 1.000 (0.997-1.003) | 0.986 |
| Sex | ||||
| 0 (female) | 1 | 1 | ||
| 1 (male) | 1.154 (1.119-1.191) | <0.001∗ | 1.132 (1.046-1.225) | 0.002∗ |
| Race | ||||
| 1 (white) | 1 | 1 | ||
| 2 (black) | 1.183 (1.139-1.228) | <0.001∗ | 1.059 (0.964-1.164) | 0.230 |
| 3 (others) | 0.906 (0.876-0.938) | <0.001∗ | 0.959 (0.880-1.046) | 0.345 |
| Grade | ||||
| Low | 1 | 1 | ||
| High | 1854 (1.765-1.948) | <0.001∗ | 1.757 (1.631-1.892) | <0.001∗ |
| Tumor size | ||||
| <5 mm | 1 | 1 | ||
| ≥5 mm | 3.014 (2.926-3.105) | <0.001∗ | 1.577 (1.459-1.705) | <0.001∗ |
| Lymphatic metastasis | ||||
| No | 1 | 1 | ||
| Yes | 2.001 (1.935-2.068) | <0.001∗ | 1.220 (1.087-1.368) | <0.001∗ |
| Distant metastasis | ||||
| No | 1 | 1 | ||
| Yes | 3.559 (3.436-3.686) | <0.001∗ | 1.550 (1.398-1.718) | <0.001∗ |
| Stage | ||||
| Early | 1 | 1 | ||
| Advanced | 3.651 (3.543-3.762) | <0.001∗ | 1.760 (1.614-1.918) | <0.001∗ |
| Surgery (yes:1, no: 0) | ||||
| No | 1 | 1 | ||
| Yes | 0.263 (0.254-0.273) | <0.001∗ | 0.295 (0.274-0.319) | <0.001∗ |
| Radiotherapy | ||||
| No | 1 | 1 | ||
| Yes | 1.286 (1.222-1.354) | <0.001∗ | 0.808 (0.716-0.912) | <0.001∗ |
| Insurance | ||||
| No | 1 | 1 | ||
| Yes | 0.537 (0.501-0.576) | <0.001∗ | 0.670 (0.567-0.791) | <0.001∗ |
| Marriage | ||||
| No | 1 | 1 | ||
| Yes | 0.825 (0.804-0.847) | <0.001∗ | 0.866 (0.809-0.927) | <0.001∗ |
HR: hazard ratio; CI: confidence interval. ∗P < 0.05.