Table 3.
Gonioscopic intraobserver (intervisit) agreement for angle classification by examiner (kappa [95% confidence interval]).
| Examiner | Kappa [95% CI] |
N | Agree | Disagree n (%) |
||
|---|---|---|---|---|---|---|
| Overall n (%) |
Narrow n |
Open n |
||||
| V | 0.67 [0.10, 1.00] |
6 | 5 (83%) | 3 | 2 | 1 (17%) |
| W | 0.72 [0.43, 1.00] |
27 | 24 (89%) | 6 | 18 | 3 (11%) |
| X | 0.86 [0.68, 1.00] |
32 | 30 (94%) | 10 | 20 | 2 (6%) |
| Y | 0.68 [0.43, 0.94] |
36 | 31 (86%) | 9 | 22 | 5 (14%) |
| Z | 0.53 [0.07, 1.00] |
41 | 38 (93%) | 2 | 36 | 3 (7%) |
| Combined | 0.74 [0.62, 0.87] | 142 | 128 (90%) | 30 | 98 | 14 (10%) |
CI: confidence interval.
The kappa criteria were <0.2 poor; 0.21 to 0.40 fair; 0.41 to 0.60 moderate; 0.61 to 0.80 good; and >0.80 excellent.