Table 2.

Summary of Mean Differences, Limits of Agreement, Correlation Coefficient, and Coefficient of Repeatability for Intraobserver Variability for Observer 1

Area	Mean CV 1 (mm3)	Mean CV 2 (mm3)	SE (mm3)	Difference between Means (mm3)	95% Limit of Agreement* (mm3)	CCC	CR (mm3)	95% CI (mm3)
Average	8.79	8.67	0.007	−0.043	−0.46 to +0.37	0.9955	0.42	0.31–0.52
Central ring	0.29	0.285	0.01	+0.0003	−0.014 to +0.015	0.9956	0.014	0.011–0.019
Inner ring	2.095	2.0450	0.0045	−0.013	−0.12 to +0.09	0.9956	0.11	0.078–0.132
Outer ring	6.9	6.3250	0.0045	−0.025	−0.49 to +0.44	0.9891	0.47	0.34–0.58

CR, coefficient of reproducibility; Mean CV 1, choroidal volume measurements obtained by Observer 1; Mean CV 2, choroidal volume measurements obtained by Observer 2.

^*95% limits of agreement = mean difference ±1.96 × SD.