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Table 3 Intra-rater reliability estimates
From: Degenerative findings on MRI of the cervical spine: an inter- and intra-rater reliability study
| MRI finding | n | Reader pair | Observed agreement (%) | Agreement by chance (%) | Kappa (95% CI) |
|---|---|---|---|---|---|
| Kyphosisa | 50 | A1A2 | 96.0 | 59.6 | 0.90 (0.85; 0.96) |
| Disc heightb | 200 | A1A2 | 84.0 | 51.5 | 0.67 (0.57; 0.77) |
| Disc contourb | 174 | A1A2 | 88.5 | 43.9 | 0.80 (0.71; 0.87) |
| Spinal canal stenosisb | 50 | A1A2 | 94.0 | 76.6 | 0.73 (0.51; 0.90) |
| Vertebral endplate signal change | Too low prevalences (i.e. ≤ 10%) | ||||
| Uncovertebral osteoarthritisc | 281 | A1A2 | 90.4 | 67.0 | 0.71 (0.61; 0.81) |
| Zygapophyseal osteoarthritisc | 240 | A1A2 | 90.8 | 68.8 | 0.71 (0.59; 0.82) |
| Neural foraminal stenosisc | 287 | A1A2 | 90.6 | 62.6 | 0.75 (0.66; 0.84) |
