Breast-Conserving Surgery in Triple-Negative Breast Cancer: A Retrospective Cohort Study

Table 9

Multivariate analysis of the overall survival rate.

Variable	β	sx	Wald	HR	95% CI
Tumor size	0.704	0.459	2.347	2.021	0.822–4.972	0.126
Ki-67	1.001	0.443	5.111	2.720	1.142–6.476	0.024
Ki-67 variation	−0.422	0.347	1.482	0.656	0.332–1.294	0.223
Stage	0.406	0.484	0.701	1.500	0.581–3.878	0.402