Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 3 Level of agreement among observers for the AO/OTA 2018 classification after both review sessions
AO/OTA 2018 | Observers | % agreement | Kappa (95% CI) | Judgement |
|---|---|---|---|---|
First reading | 1 versus 2 | 61.2 | 0.519 (0.413–0.625) | Moderate agreement |
1 versus 3 | 83.6 | 0.799 (0.717–0.881) | Substantial agreement | |
2 versus 3 | 77.6 | 0.719 (0.625–0.813) | Substantial agreement | |
Mean | 74.1 | 0.679 (0.413–0.881) | Substantial agreement | |
Second reading | 1 versus 2 | 62.1 | 0.534 (0.429–0.638) | Moderate agreement |
1 versus 3 | 81 | 0.769 (0.684–0.855) | Substantial agreement | |
2 versus 3 | 75.9 | 0.7 (0.605–0.795) | Substantial agreement | |
Mean | 73 | 0.667 (0.429–0.855) | Substantial agreement |