Table 5.
Multivariate analysis of factors affecting disease persistence.
| Risk factor | Hazard ratio (95% CI) | P value |
|---|---|---|
| Sex (men) | 0.344 (0.092–1.288) | 0.113 |
| Age at diagnosis | 0.984 (0.953–1.015) | 0.306 |
| T staging | 0.984 (0.432–2.242) | 0.969 |
| Nx/0 | Referent | |
| N1a | 5.728 (2.274–14.424) | 0.001 |
| N1b | 25.977 (9.412–71.696) | 0.001 |
| Follicular histology | 0.000 | 0.998 |
| Positive margins | 2.952 (1.225–7.111) | 0.016 |
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.