Cohen's κ coefficients for interobserver reliability between two investigators in terms of discriminating between healthy (control) bones and bones with erosions
| Investigator 1 | Investigator 2 | Investigator 3 | Investigator 4 | |
|---|---|---|---|---|
| Investigator 1 | – | 0.877 | 0.632 | 0.877 |
| Investigator 2 | 0.877 | – | 0.475 | 0.738 |
| Investigator 3 | 0.632 | 0.475 | – | 0.475 |
| Investigator 4 | 0.877 | 0.738 | 0.475 | – |
The overall Cohen's κ coefficient was 0.683.