Whole brain radiotherapy for brain metastases from breast cancer: estimation of survival using two stratification systems

Table 4 Multivariate analyses of significant factors associated with survival by Cox regression

VARIABLE	P	HR	95% confidential interval
SURGICAL RESECTION	<0.0001	4.34	2.5	7.14
SINGLE METASTASES	0.14	1.08	0.97	1.21
*KPS >= 70*	0.55	1.31	0.55	3.23
BS-BM	0.58	0.63	0.12	3.29
RPA	<0.0001	1.64	1.32	2.04
CONTROL PRIMARY TUMOR	0.66	0.92	0.63	1.34
NO EXTRACRANIAL METASTASES	<0.0001	2.38	1.63	3.44

ISSN: 1471-2407