Table 2.
Kappa values and percentage agreement for interobserver agreement (experienced versus novice) on the classification of CM, the classification of SM, and MRI-based qualitative parameters.
| Item | Kappa | 95% CI 1 | Percentage Agreement |
|---|---|---|---|
| CM classification | 0.23 | 0.10–0.37 | 47% |
| CM normal/abnormal | 0.31 | 0.12–0.51 | 70% |
| SM classification | 0.50 | 0.35–0.64 | 69% |
| SM normal/abnormal | 0.64 | 0.48–0.79 | 82% |
| Presence of CSF signal between the cerebellum and the supraoccipitum | 0.11 | −0.03–0.24 | 48% |
| Presence of CSF signal at the ventral aspect of the cervicomedullary junction | 0.71 | 0.41–1.00 | 97% |
| Presence of CSF signal at the dorsal aspect of the cervicomedullary junction | 0.20 | 0.00–0.39 | 62% |
| Syrinx location | 0.61 | 0.49–0.73 | 75% |
1 95% confidence interval.