Table 3.

Agreement between values of any two of the six measurement methods.

	Axial CT linear	Sagittal CT linear	Axial CT plane	3D CT linear	3D CT surface
Plain radiograph linear	5.82, −10.75 to 22.38	−1.22, −17.89 to 15.46	−1.42, −19.69 to 16.84	−2.13, −20.52 to 16.25	8.58, −7.81 to 24.98
Axial CT linear		0.21, −8.82 to 9.24	7.24, 1.21 to 13.28	−0.71, −6.26 to 4.84	10.00, 3.88 to 16.13
Sagittal CT linear			7.03, −1.17 to 15.24	−0.92, −10.72 to 8.89	9.80, 2.87 to 16.73
Axial CT plane				−7.95, −15.83 to −0.07	2.77, 3.02 to 8.55
3D CT linear					10.71, 2.72 to 18.71

Data are presented as mean difference (%), Bland–Altman 95% limits of agreement (mean difference ± 1.96 SD) (%).