Table 4.

Multiple regression analysis of local control for metastases treated with GK SRS.

Factora	N	# events	Relative risk of failure (95% CI)	p-value
BRAF			0.01	0.01
Wild-type	39	19	1.0
Mutated	30	7	0.2 (0.1–0.7)
WBRT				0.92
No	25	7	1.0
Yes	44	19	0.9 (0.3–3.0)
Marginal dose				0.07
<22 Gy	30	16	1.0
≥22 Gy	39	10	0.4 (0.2–1.1)
Max tumor dimension				0.89
<0.80 cm	29	16	1.0
≥0.80 cm	40	10	0.9 (0.3–2.5)

^aTumor volume not included due to high correlation with tumor dimension.