Table 5.

Multivariate analysis of variables, including pathological central node metastasis, for central node recurrence-free survival for cN0M0 PTC patients, who underwent total, near total, or subtotal thyroidectomy

Variable	p value	Hazard ratio (95%CI)
Male gender	0.8297	0.89 (0.31–2.57)
Age ≥ 55 years	0.0033	2.87 (1.42–5.81)
Extrathyroid extension (Ex)	0.0011	3.18 (1.58–6.41)
Tumor size
>4.0 cm	0.0006	5.29 (2.03–13.70)
2.1–4.0 cm	0.0121	2.89 (1.26–6.67)
Pathologically confirmed central node metastasis	0.3816	1.39 (0.66–2.92)