TABLE 1:

ADC measurement reproducibility for the different subgroups

Variable	Mean (×10⁻⁶ mm²/s)	Within-Subject SD	95% Reference Range^a	CV (%)^b	Reliability Coefficient^c
Analysis/re-analysis:
Control mean (n = 10)	928	23	±45	2.5	0.99
Diseased optic nerves (n = 16)	1324	97	±189	7.3	0.94
Healthy contralateral optic nerves (n = 14)	990	31	±61	3.2	0.96
Image/reimage:
Control mean (n = 7)	946	95	±186	10.0	0.58

^a 1.96 × within-subject SD; 95% of measurements are expected to lie within this departure from the true value.
^b CV, coefficient of variation.
^c The proportion of total variance due to between-subject variation. Under assumptions that are plausible here, 1 minus this value is the proportion of variation due to measurement error.