Table 2.

Summary of the linear regression results for the displacement and nominal strain comparisons between FE and DIC results.

	Displacement								Nominal strain
	Defect				Augmented				Defect				Augmented
	R2	NRMSE (%)	a	b (µm)	R2	NRMSE (%)	a	b (µm)	R2	NRMSE (%)	a	b (µε)	R2	NRMSE (%)	a	b (µε)
N–M	0.980	3.02	0.83	80	0.995	1.87	0.98	137	0.700	7.66	0.70	− 53	0.827	4.80	0.61	− 164
N–S	0.999	1.13	1.27	256	0.999	1.12	1.24	232	0.833	7.08	0.81	− 19	0.813	8.75	0.87	− 58
I–M	0.984	4.93	1.50	448	0.951	5.04	0.87	361	0.749	9.60	0.75	351	0.653	7.78	0.56	603
I–A	0.993	2.21	1.03	474	0.985	2.57	0.85	458	0.904	3.89	0.68	67	0.797	4.74	0.5	163
I–L	0.998	1.50	1.45	597	0.995	1.96	1.06	421	0.776	10.38	1.02	-43	0.861	5.04	0.66	105
I–P	0.877	4.95	0.55	145	0.982	3.73	1.10	397	0.736	7.22	0.55	643	0.629	7.78	0.51	479
Mean	0.972	2.96	1.11	333	0.985	2.71	1.02	334	0.783	7.64	0.75	158	0.763	6.48	0.62	188
SD	0.047	1.67	0.37	204	0.018	1.43	0.15	124	0.074	2.28	0.16	282	0.097	1.81	0.14	300

a = slope; b = intercept.

The abbreviations on the left refer to the location of the lesion in the tested femurs (see Table 1).