Table2. Univariate and multiple regression analysis of papillary thyroid carcinoma.
| Variables | Univariate analysis | Multivariate analysis | ||
| Hazard ratio (95% CI) | P value | Hazard ratio (95% CI) | P value | |
| Age | 1.019 (1.002-1.036) | 0.029 | 1.003 (0.958-1.050) | 0.901 |
| Gender (male/female) | 1.635 (0.920-2.906) | 0.094 | 1.972 (0.773-5.036) | 0.156 |
| Pathologic stage | 1.578 (1.249-1.994) | <0.001 | 1.272 (0.654-2.471) | 0.478 |
| Tumor stage | 1.989 (1.443-2.742) | <0.001 | 0.892 (0.476-1.670) | 0.721 |
| Lymph node metastasis (yes/no) | 1.679 (0.932-3.024) | 0.084 | 1.342 (0.504-3.575) | 0.556 |
| Distant metastasis (yes/no) | 7.559 (2.857-20.004) | <0.001 | 1.085 (0.193-6.110) | 0.926 |
| Tumor size | 1.182 (0.997-1.401) | 0.060 | 0.573 (0.371-.886) | 0.012 |
| Tumor status (with tumor/tumor free) | 16.169 (9.243-28.285) | <0.001 | 15.152 (4.765-48.173) | <0.001 |
| Multifocality (multifocal/unifocal) | 1.095 (0.627-1.913) | 0.750 | 1.176 (0.435-3.174) | 0.750 |
| IRGPI | 2.711 (2.046-3.592) | <0.001 | 2.425 (1.492-3.943) | <0.001 |