Table 2.

Analysis of factors associated with intracranial progression free survival following diagnosis of brain metastases.

		IC-PFS	UVA	MVA
		Median(m)	P value	P value	HR	95%CI for HR
						Lower	Upper
Age	<40yrs	11.0
	>40yrs	14.1	0.493	0.507	0.89	0.123	2.084
ER	Positive	17.1
	Negative	12.0	0.448	0.833	2.559	0.39	2.13
PR	Positive	17.1
	negative	13.6	0.389	0.084	2.656	0.169	1.118
Ki-67	≥50%	7.0
	<50%	17.1	0.065	0.012	2.989	0.116	0.761
Her2 targeted therapy	Yes	20
	No	14	0.037	0.046	3.998	1.028	15.324
ECOG score	0-1	20
	2-4	13.6	0.97	0.204	1.617	0.292	1.3
Tumor burden	Low	20
	High	9.0	0.003	0.025	4.991	1.129	6.411

Tumor burden means the intracranial tumor.