Inter- and intrarater agreement (ICC) and confidence intervals for direct measures of spinal canal and spinal cord diameters derived from sagittal and axial MR images using the methodology featured in Figs 3–5 using 5 raters, 35 patients, and 2 rounds of evaluations
Interrater ICC: Round 1 | Interrater ICC: Round 2 | Intrarater ICC | |
---|---|---|---|
Sagittal cord diameter at level of injury (mm)a | 0.83 (0.75, 0.91) | 0.82 (0.74, 0.90) | 0.84 (0.80, 0.89) |
Sagittal cord diameter at first rostral segment above injury (mm)a | 0.37 (0.20, 0.53) | 0.27 (0.11, 0.43) | 0.79 (0.73, 0.85) |
Sagittal cord diameter at first caudal segment below injury (mm)a | 0.43 (0.27, 0.60) | 0.51 (0.36, 0.67) | 0.69 (0.61, 0.77) |
Sagittal canal measurement at level of injury (mm)a | 0.80 (0.71, 0.89) | 0.72 (0.60, 0.83) | 0.85 (0.81, 0.90) |
Sagittal canal measurement rostral to injury (mm)a | 0.23 (0.07, 0.38) | 0.31 (0.15, 0.48) | 0.86 (0.82, 0.91) |
Sagittal canal measurement caudal to injury (mm)a | 0.56 (0.41, 0.71) | 0.38 (0.21, 0.54) | 0.90 (0.86, 0.93) |
Anteroposterior diameter (mm) of the spinal cord at the point of maximal compression or epicenter of injury from axial imagea | 0.76 (0.65, 0.86) | 0.69 (0.57, 0.82) | 0.86 (0.82, 0.90) |
Transverse diameter (mm) of the spinal cord at the point of maximal compression or epicenter of injury from axial imagea | 0.41 (0.25, 0.58) | 0.33 (0.17, 0.50) | 0.78 (0.72, 0.85) |
Anteroposterior diameter (mm) of the spinal cord on axial image at the nearest adjacent rostral normal levela | 0.37 (0.20, 0.53) | 0.27 (0.11, 0.43) | 0.82 (0.77, 0.87) |
↵b Continuous data.