Table 4. Independent factors influencing PFS and OS by Cox regression.

	PFS	OS
	HR (95% CI)	HR (95% CI)
Visceral metastases	P=0.009	P=0.08
Present	2.38 (1.2–4.5)	1.28 (0.96–2.15)
Absent	1	1
ECOG performance	P=0.09	P=0.08
0	0.84 (0.81–1.12)	0.81 (0.72–1.24)
1 and 2	1	1
p95	P=0.03	P=0.2
Positive	2.1 (1.1–3.7)	1.14 (0.88–1.49)
Negative	1	1
Trastuzumab treatment response	P=0.014	P=0.013
Absent	2.2 (1.18–4.47)	1.7 (1.14–3.47)
Present	1	1

Abbreviations: CI=confidence interval; ECOG=Eastern Cooperative Oncology Group; HR=hormone receptor; OS=overall survival; PFS=progression-free survival.