Table 3.

Multivariate analysis for SLN metastasis predictive parameters

Variable	SLNM (n)	SLN-NM (n)	p Value	Hazard ratio	95%CI
Age
<40 years	24	44
≥40 years	72	277	0.011	2.188	1.198–4.001
Tumor size
≤2 cm	58	250
>2 cm	38	71	0.028	0.616	0.401–0.949
Histological grade
I–II	62	270
III	34	51	0.003	0.408	0.224–0.743
Ki67
Low index	54	224
High index	42	97	0.574	0.851	0.485–1.494

SLNM – sentinel lymph node metastasis; SLN-NM – sentinel lymph node not metastasis; CI – confidence interval