Canine atlantoaxial optimal safe implantation corridors – description and validation of a novel 3D presurgical planning method using OsiriX™

Table 2 Concordance analyses validating our mathematical method and estimating error generated by manual measures

Angle	Value 1	Value 2	n	R²	ρ_c	Low TL	Up TL	Low CI	Up CI	Bias (°)	P-value
ProjA	GS	Single value	96	0.9972	0.9986	−1.23	1.20	−0.13	0.09	−0.019	0.726
	Rep1	Rep2	48	0.9944	0.9971	−1.94	1.75	−0.32	0.13	−0.092	0.415
	Obs1	Obs2	48	0.9937	0.9968	−1.99	1.92	−0.27	0.20	−0.033	0.779
SafA	GS	Single value	192	0.9992	0.9996	−0.65	0.70	−0.02	0.07	0.027	0.239
	Rep1	Rep2	96	0.9984	0.9992	−1.04	1.00	−0.11	0.07	−0.020	0.677
	Obs1	Obs2	96	0.9983	0.9991	−0.94	1.17	0.02	0.21	0.116^a	0.019

^astatistically significant bias (considered clinically non-significant); Bold font: agreement between GS and manually measured values
n: number of measures compared, R ² correlation coefficient, ρ _c concordance coefficient, TL 95 % tolerance interval limit (in degrees), CI 95 % confidence interval limits (in degrees), GS gold standard (mathematically calculated values), Obs observer, Rep repeat

ISSN: 1746-6148