Reliability of foveal avascular zone measurements in eyes with retinal vein occlusion using optical coherence tomography angiography

Table 3 Intraclass correlation coefficient (ICC) for reliability analysis of foveal avascular zone (FAZ) measurements

Rating	ICC	95% conf. interval
Interrater reliability
Individual	0.62	0.41	0.79
Average	0.83	0.67	0.92
Intrarater reliability
A	0.92	0.82	0.96
B	0.96	0.91	0.98
C	0.88	0.76	0.94
Interrater reliability—type of occlusion
Central vein occlusion*
Individual	0.75	0.51	0.90
Average	0.90	0.76	0.96
Branch vein occlusion**
Individual	0.48	0.12	0.80
Average	0.74	0.29	0.92
Interrater reliability—presence of edema
Macular edema
Individual	0.62	0.36	0.82
Average	0.83	0.63	0.93
Without macular edema
Individual	0.58	0.11	0.90
Average	0.81	0.28	0.96
Intrarater reliability—type of occlusion
Central vein occlusion
A	0.91	0.75	0.97
B	0.99	0.96	0.99
C	0.94	0.81	0.98
Branch vein occlusion
A	0.93	0.75	0.98
B	0.94	0.80	0.98
C	0.79	0.40	0.94
Intrarater reliability—presence of edema
Macular edema
A	0.91	0.78	0.97
B	0.93	0.83	0.97
C	0.87	0.69	0.95
Without macular edema
A	0.91	0.57	0.98
B	0.98	0.87	0.99
C	0.90	0.53	0.98

ISSN: 2056-9920