Table 2. Summary of intra-observer agreements on the total and subfoveal choroidal thickness measurements.
| Intra-observer agreement | Total ChT |
Subfoveal ChT |
||||
| ICC (95%CI) | Mean difference (95%CI) (µm) | CR (µm) | ICC (95%CI) | Mean difference (95%CI) (µm) | CR (µm) | |
| Group A | 0.996 (0.985-0.999) | 2.9 (1.1-4.8) | 8.8 | 0.989 (0.975-0.995) | 2.0 (-2.4-6.4) | 21.2 |
| Group B | 0.989 (0.973-0.996) | -4.2 (-9.3-1.0) | 22.1 | 0.984 (0.961-0.993) | -4.5 (-13.0-4.1) | 36.8 |
| Group C | 0.996 (0.991-0.998) | -0.5 (-4.4-3.4) | 18.0 | 0.982 (0.958-0.992) | -0.6 (-10.7-9.5) | 46.8 |
| Overall | 0.995 (0.991-0.997) | -0.3 (-2.4-1.8) | 17.5 | 0.985 (0.975-0.990) | -0.8 (-5.1-3.6) | 35.9 |
| Non-agreement | 0.981 (0.912-0.996) | 6.3 (-4.9-17.4) | 26.1 | 0.927 (0.686-0.985) | 4.4 (- 21.3-30.0) | 60.1 |
ICC: Intraclass correlation coefficient; CI: Confidence interval; CR: Coefficient of repeatability, ChT: Choroidal thickness.