Table 2.

Results of the linear regressions between vertebral strength (Fexp), bone mineral content (BMC), μFE stiffness (KμFE), and hFE strength (FhFE) for all, lytic, blastic, and mixed samples. Based on these numbers, hFE models seem to predict vertebral strength better than the other methods and is more robust to the type of lesion.

Variable	B	SE	β	95% CI for B	R2	P
Fmax_hFE
Intercept	0.938	0.72		−0.292 – 2.169
F_hFE (kN)	0.781	0.078		0.641 – 0.919	0.78	<0.001
Clinical classification with Fmax_hFE
Intercept	1.205	0.72		−0.273 – 2.68
F_hFE	0.779	0.078	0.883	0.620 – 0.937	0.77	<.0001
Lesion classification
Blastic	−0.487	0.396	0.098	−1.293 – 0.319		0.228
Mixed	−0.094	0.479	0.016	−0.879 – 0.806		0.947
Lytic	−0.241	0.512	0.041	−1.283 – 0.319		0.641
K_μFE
Intercept	2.945			1.723 – 4.166
K_μFE (kN/mm)	0.08	0.010		0.063 – 0.104	0.66	<.0001
Clinical classification with K_μFE
Intercept	3.540	0.580		2.359 – 4.727		<.0001
K_μFE	0.082	0.009	0.797	0.063 – 0.100	0.73	<.0001
Lesion classification					0.76	0.0146
Blastic	−0.225	0.426	−0.045	−1.093 – 0.643		0.602
Mixed	−1.158	0.487	−0.111	−1.759 – 0.412		0.2158
Lytic	−1.667	0.533	−0.286	−2.702 – 0.633		0.0025
BMC with K_μFE
Intercept		0.531		−0.539 – 1.618
K_μFE	0.0542	0.008	0.527	0.0382 – 0.0702		<.0001
BMC	0.5395	0.0002	0.5257	0.0008 – 0.0014		<.0001