Table 2.

Multivariate survival analysis following metastatic breast cancer diagnosis.

	Multivariate
Factor	HR	95% CI	p value*
Age (<70/≥70)	0.80	0.56–1.14	0.22
ECOG (<2/≥2)	0.75	0.56–0.99	0.039
De novo/recurrent disease	1.00	0.76–1.30	0.97
Number of metastatic sites (<3/≥3)	0.55	0.46–0.67	<0.001
HER2-low/HER2 0	0.85	0.73–0.98	0.026
Hormone receptor positive/negative	0.60	0.51–0.70	<0.001

ECOG, Eastern Cooperative Oncology Group performance status; HR, hazard ratio; CI, confidence interval; HER2, human epidermal growth factor receptor 2.

*Bold values indicate statistically significant results.