Table 5.

Results of multivariate predictive models

		2.5
	Coeff.
Covariate		Robust Variance Estimates
		OIM*	p value	Boot-strap	p value	Jack-knife	p value
Diameter of largest met	1.66	0.28	0.003	0.26	0.001	0.2807	0.004
WBRT	2.39	0.85	0.014	0.84	0.013	0.9149	0.026
Cerebellar and/or Brainstem met	2.07	0.74	0.042	0.77	0.051	0.6604	0.026
Expanding + New sites	1.76	0.65	0.124	0.66	0.131	0.6394	0.125
Worst Pain	1.12	0.06	0.040	0.07	0.075	0.0671	0.071
C statistic, (bootstrap 95% CI)			0.75 (0.67 – 0.82)
		5.0
Diameter of largest met	1.58	0.30	0.016	0.259	0.005	0.3061	0.021
WBRT	2.19	0.89	0.055	1.0799	0.112	1.0972	0.123
Cerebellar and/or Brainstem met	2.38	1.04	0.048	1.2236	0.092	1.3285	0.126
Expanding + New sites	2.45	1.07	0.041	1.6188	0.176	1.4238	0.129
Worst Pain	1.08	0.07	0.221	0.1065	0.444	0.0856	0.345
C statistic, (bootstrap 95% CI)			0.77 (0.67 – 0.84)
		7.5
Diameter of largest met	2.23	0.53	0.001	0.7153	0.012	0.613	0.005
WBRT	3.93	1.95	0.006	2.9758	0.07	2.7786	0.057
Cerebellar and/or Brainstem met	1.88	1.06	0.259	1.8293	0.514	1.4871	0.425
Expanding + New sites	3.45	1.85	0.021	2.9356	0.145	2.3222	0.07
Worst Pain	1.15	0.09	0.066	0.1518	0.278	0.1159	0.16
C statistic, (bootstrap 95% CI)			0.83 (0.68 – 0.90)
		10
Diameter of largest met	1.96	0.48	0.006	0.6104	0.031	0.508	0.012
WBRT	3.69	2.01	0.017	2.1764	0.027	2.3426	0.044
Cerebellar and/or Brainstem met	2.72	1.79	0.128	3.0791	0.376	1.9453	0.165
Expanding + New sites	1.69	1.04	0.392	1.17	0.447	1.1186	0.429
Worst Pain	1.19	0.10	0.034	0.1725	0.225	0.1442	0.151
C statistic, (bootstrap 95% CI)			0.8 (0.65 – 0.90)

^*Observed Information Matrix