Table 6.
Multivariate analysis of factors affecting disease recurrence.
| Risk factor | Hazard ratio (95% CI) | P value |
|---|---|---|
| Sex (men) | 1.426 (0.372–5.464) | 0.605 |
| Age at diagnosis | 1.027 (0.984–1.071) | 0.231 |
| T staging | 1.073 (0.307–3.745) | 0.912 |
| Nx/0 | Referent | |
| N1a | 7.815 (1.977–30.898) | 0.003 |
| N1b | 17.108 (3.500–83.628) | 0.001 |
| Histology | 0.000 | 0.998 |
| Positive margins | 0.526 (0.062–4.467) | 0.556 |
Note. T1 is the referent for T2 and Nx/0 is the referent for N1a and N1b, papillary histology is the referent for follicular thyroid cancer, women was the referent for men, and clear margins were the referent for positive margins.