Fig. 3From: Reliability of preoperative MRI findings in patients with lumbar spinal stenosisBland-Altman plots demonstrating the degree of agreement and variability of the measurements of the dural sac cross-sectional area (DSCA) between observers 1 and 2 (a), 1 and 3 (b), 1 and 4 (c), 2 and 3 (d), 2 and 4 (e) and 3 and 4 (f). The solid horizontal lines show the mean differences, and the dashed lines show 95% limits of agreementBack to article page