Table 4.

Multivariable analysis for overall survival

Variable	HR	95 % CI	P a
BRCA1/2 mutation status			0.041
Negative	1.0
Positive	1.9	1.0–3.7
Age, years			0.16
36–40	1.0
≤ 30	1.2	0.6–2.2
31–35	1.6	1.0–2.5
TNM stage			<0.001
I	1.0
II	2.2	1.3–3.9
III	6.1	3.1–12.1
(Neo)adjuvant chemotherapy			0.71
No	1.0
Yes	0.9	0.5–1.5

^aAssesed by the Cox proportional hazards model adjusted for all variables in Table 3