Table 2.

ICC and Fleiss' generalized kappa of probability codes of circumpapillary retinal nerve fiber layer thickness measurements obtained using Cirrus optical coherence tomography

ICC = intra-class correlation coefficient; NA = not available.

'≒' indicates similar values without statistically significant difference between two groups.

^*ICC values with 95% confidence interval in parenthesis, calculated with the two-way random effects model using the absolute agreement definition; ^†Mean on top with 95% confidence interval in parentheses; ^‡Due to insufficient number of categories to perform test.