Stereoscopic interobserver measures | Monoscopic interobserver measures | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean difference between measures | SD of difference | t test p value | Range of CDR | 95% TC (% of range) | ICC | >0.2 CDR difference | Mean difference between measures | SD of difference | t test p value | Range of CDR | 95% TC (% of range) | ICC | >0.2 CDR difference | ||
H-CDR | 0.010 | 0.062 | 0.116 | 0.41 | 30 | 0.73 | 0 | 0.044 | 0.074 | 0.000 | 0.46 | 32 | 0.50 | 1 [1%] | |
V-CDR | −0.003 | 0.061 | 0.311 | 0.47 | 25 | 0.84 | 1 [1%] | 0.033 | 0.077 | 0.000 | 0.5 | 30 | 0.71 | 3 [3%] | |
A-CDR | 0.004 | 0.072 | 0.628 | 0.55 | 26 | 0.84 | NA | 0.057 | 0.092 | 0.000 | 0.57 | 32 | 0.63 | NA | |
P-CDR | 0.003 | 0.051 | 0.597 | 0.39 | 26 | 0.84 | NA | 0.034 | 0.066 | 0.000 | 0.42 | 31 | 0.64 | NA |
TC = tolerance for change; V-CDR = vertical cup-disc ratio; H-CDR = horizontal cup-disc ratio; A-CDR = area cup-disc ratio; P-CDR = perimeter cup-disc ratio; ICC = intraclass correlation coefficient.