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. 2012 Jul 6;26(10):1295–1301. doi: 10.1038/eye.2012.137

Table 2. Descriptive statistics of the health status measures.

Health status measure (potential score range) Frequencies Mean (SD) Observed range % Scoring min % Scoring max
EQ-5D (−0.6 to 1.0) 131 0.77 (0.22) −0.077 to 1.0 1.53 26.72
SF-6D (0 to 1.0) 124 0.65 (0.08) 0.42 to 0.84 0.81 0.81
TTO (0.1.0) 123 0.90 (0.18) 0.25 to 1.0 1.63 64.23
VFQ-25 (0 to 100) 132 72.88 (22.10) 17.08 to 99.43 0.76 0.76