Table 3.

The reliability of the classification based on CT and MRI as well as MRI alone

	MRT + CT		MRT
		0.95 CI		0.95 CI
	Kappa	(lower–upper limit)	Kappa	(lower–upper limit)
OF Spine (OF 2–4)	0.630	0.549–0.711	0.494	0.416–0.572
OF 2	0,342	0.237–0.446	0.209	0.106–0.311
OF 3	0.614	0.510–0.718	0.487	0.385–0.590
OF 4	0.802	0.698–0.906	0.676	0.573–0.778

Fleiss’ Kappa for interrater reliability in evaluating the OF classification using MRI and CT (MRI + CT) versus MRI alone (MRI)