Table II.

Multivariate analysis of patient survival.

Clinicopathological characteristics	HR	95% CI	P-value
Tumor CTLA-4	0.058	0.015–0.224	<0.001
Ki-67	4.406	0.528–36.756	0.171
Tumor stage	2.769	1.181–6.488	0.019
Lymph node	0.425	0.128–1.413	0.163
Tumor size	0.842	0.349–2.034	0.702
Years	2.337	0.471–11.591	0.299
Menopausal status	1.420	0.610–3.308	0.416
Histological grade	1.086	0.559–2.111	0.807
Interstitial CTLA-4	1.413	0.430–4.637	0.569

CTLA-4, cytotoxic T lymphocyte-associated antigen 4; CI, confidence interval; HR, hazard ratio.