Table 3.

Clinico-pathological prognostic factors evaluated at the univariate and multivariate analysis.

Univariate analysis. Correlation between recurrence and:		Multivariate analysis (Cox regression model)
		Risk ratio	95% CI	P
Age	P = 0.944 (NS)	/	/	/
Sex	P = 0.272 (NS)	/	/	/
Size	P = 0.012	1.0	0.9–1.1	0.502
Histotype (TC vs AC)	P = 0.003	3.4	1.1–10.7	0.061
Mitotic index	P = 0.044	0.9	0.7–1.3	0.585
Nodal metastasis	P = 0.028	2.3	0.8–6.6	0.110
N stage	P = 0.014	0.9	0.2–3.1	0.822
pTNM stage	P = 0.032	/	/	/
Ki-67	P = 0.0002	20.5	2.1–201.3	0.009
Ki-67 > 0.04	P = 0.000000006	/	/	/