Table 2.
Inter-rater reliability for radiologic and neurological measurements of cervical myelopathy
| ICC or Cohen’s kappa | 95% CI | |
|---|---|---|
| TPR* | 0.933 | 0.907–0.960 |
| SAC* | 0.901 | 0.847–0.934 |
| CCR* | 0.946 | 0.918–0.965 |
| SI on T1WI MRI (0/1/2)† | 0.897 | 0.799–0.995 |
| SI length* | 0.928 | 0.891–0.953 |
| SI ratio* | 0.873 | 0.806–0.917 |
| MRC grade† | 0.912 | 0.914–0.946 |
| Preoperative modified Nurickgrade† | 0.967 | 0.921–1.012 |
| Preoperative modified JOA score† | 0.975 | 0.962–0.983 |
*
ICC for continuous variables.
†
Cohen’s kappa coefficient for categorical variables, 95% CI.
ICC : intraclass correlation coefficient, CI : confidence interval, TPR : Torg-Pavlov ratio, SAC : space available for the cord, CCR : cord compression ratio, SI : signal intensity, TIWI : T1-weighted imaging, MRI : magnetic resonance imaging, MRC : Medical Research Council, JOA : Japanese Orthopedic Association