Table 1. Summary of inter-observer agreements on the total and subfoveal choroidal thickness measurements.
| Inter-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 | 0.985 (0.873-0.996) | 7.1 (4.1-10.2) | 14.1 | 0.986 (0.965-0.994) | 4.4 (-0.4-9.2) | 22.2 |
| Group B | 0.963 (0.913-0.984) | 5.8 (-3.5-15.0) | 40.7 | 0.916 (0.778-0.967) | 18.5 (2.7-34.3) | 69.8 |
| Group C | 0.971 (0.912-0.990) | 10.7 (-0.2-21.6) | 41.4 | 0.959 (0.880-0.985) | 15.1 (-1.0-31.2) | 61.4 |
| Overall | 0.972 (0.944-0.985) | 7.6 (3.4-11.9) | 33.1 | 0.949 (0.900-0.972) | 12.2 (5.2-19.2) | 54.4 |
| Non-agreement | 0.964 (0.878-0.988) | 15.7 (3.4-28.0) | 49.9 | 0.918 (0.747-0.971) | 27.4 (5.5-49.3) | 89.2 |
ICC: Intraclass correlation coefficient; CI: Confidence interval; CR: Coefficient of repeatability; ChT: Choroidal thickness.