Table 4.
Factors associated with disease-specific mortality on multivariable analysis.
| Hazard Ratio | 95% CI | P-value | ||
|---|---|---|---|---|
|
| ||||
| Age | ||||
| <65 | Ref | |||
| 65–79 | 2.908 | 1.828 | 4.626 | 0.000 |
| 80+ | 6.709 | 3.688 | 12.203 | 0.000 |
| Race | ||||
| White | Ref | |||
| Black | 2.182 | 1.129 | 4.219 | 0.020 |
| Other | 0.133 | 0.018 | 0.962 | 0.046 |
| Gender | ||||
| Female | Ref | |||
| Male | 1.028 | 0.677 | 1.562 | 0.896 |
| Ethnicity | ||||
| Non-Hispanic | Ref | |||
| Hispanic | 0.957 | 0.514 | 1.786 | 0.892 |
| Tumor Size | ||||
| T1 | Ref | |||
| T2 | 1.758 | 0.860 | 3.593 | 0.122 |
| T3 | 2.044 | 1.047 | 3.992 | 0.036 |
| T4 | 3.676 | 1.798 | 7.516 | 0.000 |
| Nodal Stage | ||||
| N0 | Ref | |||
| N1a | 3.138 | 1.556 | 6.332 | 0.001 |
| N1b | 3.570 | 1.914 | 6.659 | 0.000 |
| Metastasis | ||||
| M0 | Ref | |||
| M1 | 9.324 | 5.703 | 15.247 | 0.000 |
| Surgical Intervention | ||||
| Total Thyroidectomy | Ref | |||
| Lobectomy | 0.724 | 0.219 | 2.399 | 0.598 |
| No surgery | 2.603 | 1.131 | 5.995 | 0.024 |
| Lymph Nodes Removed | ||||
| None | Ref | |||
| 1–3 | 1.396 | 0.595 | 3.273 | 0.443 |
| 4 + | 0.864 | 0.380 | 1.966 | 0.727 |
| Other | 0.335 | 0.105 | 1.069 | 0.065 |