Microscopic Positive Tumor Margin Increases Risk for Disease Persistence but Not Recurrence in Patients with Stage T1-T2 Differentiated Thyroid Cancer

Table 6

Multivariate analysis of factors affecting disease recurrence.

Risk factor	Hazard ratio (95% CI)	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.