Table 3 Inter-rater reliability for surgical information in the Norwegian Tonsil Surgery Register
n | Obs.agr. | Kappa (95% CI) | AC1 (95% CI) | |
|---|---|---|---|---|
Indication of surgery | 137 | 0.92 | 0.87 (0.80 to 0.94) | 0.91 (0.85 to 0.96) |
Surgical Unit | 137 | 0.96 | 0.92 (0.85 to 0.99) | 0.93 (0.87 to 0.99) |
Primary or revision surgery | 137 | 0.99 | 0.66 (0.21 to 1) | 0.98 (0.96 to 1) |
Extent of surgery | 137 | 0.93 | 0.89 (0.83 to 0.96) | 0.91 (0.85 to 0.96) |