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Interobserver agreement and kappa value between the six sets of observations, by observer A, B and C, after grouping them into two categories, cord and root compression
| Observer | Agreement (%) | Kappa value | ||
|---|---|---|---|---|
| Cord Compression | A–B | 90 | 0.67 | Good |
| B–C | 85 | 0.55 | Moderate | |
| C–A | 87 | 0.67 | Good | |
| Root Compression | A–B | 70 | 0.41 | Moderate |
| B–C | 80 | 0.55 | Moderate | |
| C–A | 72 | 0.44 | Moderate |
