Table 2.

Bland–Altman limits of agreement for each off-axis fluoroscopic rotation and motion segment

	Rotation, 95% confidence limita
Motion segment	Aligned	5 deg	10 deg	15 deg
All motion segments	−1.09 to 1.11	−0.86 to 1.00	−0.91 to 1.18	−1.04 to 1.03
L2–L3 only	−0.72 to 1.15	−1.09 to 1.30	−1.11 to 1.28	−1.38 to 1.22
L3–L4 only	−1.18 to 1.47	−0.87 to 0.71	−0.90 to 0.94	–0.80 to 0.86
L4–L5 only	−0.64 to 0.77	−0.62 to 1.02	−1.09 to 1.43	−1.16 to 1.18
L5–S1 only	−1.51 to 0.69	−0.90 to 0.98	−0.68 to 1.16	−0.97 to 1.03

^aThe upper and lower limits of agreement are symmetric about the mean difference, by definition.