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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: Retina. 2012 Oct;32(9):1884–1891. doi: 10.1097/IAE.0b013e3182509778

Table 2.

Correlation Coefficients for FAF and CFP

ICCs
Measure Graders ICC Lower Confidence
Limit		 Upper Confidence
Limit
CFP 1, 2, 3 0.96 0.94 0.97
FAF 1, 2, 3 0.99 0.98 0.99
Concordance Correlation Coefficients
Measure Graders Concordance
Correlation		 Lower 95% Confidence
Limit		 Upper 95% Confidence
Limit
CFP 1, 2, 3 0.94 0.83 0.97
FAF 1, 2, 3 0.98 0.96 0.99
Difference 1, 2, 3 −0.04 −0.157 −0.006

The 95% CIs for the coefficients and for the difference in coefficients were obtained using a bootstrap estimation procedure. Since the interval for the difference does not contain the value zero, difference between concordance correlations is significant at α = 0.05.