Fig. 3From: A novel MRI index for paraspinal muscle fatty infiltration: reliability and relation to pain and disability in lumbar spinal stenosis: results from a multicentre studyBland-Altman plots with mean differences in measurements of the muscle fat index (MFI, solid lines) and 95% limits of agreement (dashed lines) between observers 1 and 2 (a), observers 1 and 3 (b), and observers 2 and 3 (c)Back to article page