Table 2.
Intergrader Comparison
| OCT Parameter | Grader 1 Mean | Grader 2 Mean | Mean absolute difference (median, maximum) | ICC | Weighted Kappa |
|---|---|---|---|---|---|
| ICS | |||||
| Volume (9) | 0.04 | 0.03 | 0.01 (0, 0.04) | 0.96 | 1.00 |
| Volume (1–9) | 0.14 | 0.10 | 0.03 (0, 0.17) | 0.97 | 0.83 |
| FCP | 72.76 | 59.56 | 13.76 (0, 79) | 0.98 | 0.96 |
| ONL | |||||
| Volume (9) | 0.14 | 0.16 | 0.02 (0.02, 0.04) | 0.94 | 0.80 |
| Volume (1–9) | 2.98 | 3.17 | 0.22 (0.19, 0.90) | 0.81 | 0.58 |
| FCP | 211.40 | 228.08 | 25.16 (26, 76) | 0.95 | 0.77 |
ICC = Intraclass correlation coefficient
FCP = Foveal center point
ONL = Outer nuclear layer
ICS = Intraretinal cystoid space