Table 3.
Interobserver Agreement Observer 1 vs. Observer 2
| Observer 1 | Observer 2 | Observed Agreement (n = 119)* | Kappa Value (95% CI) |
|---|---|---|---|
| Session 1 | 1 | 92 (77%) | 0.47 (0.32 to 0.62) |
| 2 | 88 (74%) | 0.38 (0.22 to 0.54) | |
| 3 | 86 (72%) | 0.41 (0.19 to 0.51) | |
| Session 2 | 1 | 84 (71%) | 0.42 (0.23 to 0.53) |
| 2 | 83 (70%) | 0.48 (0.22 to 0.52) | |
| 3 | 77 (65%) | 0.39 (0.10 to 0.40) | |
| Session 3 | 1 | 83 (70%) | 0.48 (0.19 to 0.49) |
| 2 | 85 (71%) | 0.39 (0.22 to 0.52) | |
| 3 | 81 (68%) | 0.44 (0.15 to 0.45) | |
| Average | 84 (71%) | 0.42 |
*
Data are given as the number of disc levels, with percentage in parentheses