Table 2 Descriptive statistics for five approaches scores in myopia patients
Approaches | Theoretical range | Observed range | Mean (SD) | Median | Ceiling effect, N (%) | Floor effect, N (%) |
|---|---|---|---|---|---|---|
TTO | (0, 1.00) | (0.41, 1.00) | 0.95(0.06) | 0.98 | 36(7.5) | 0(0) |
SG | (0, 1.00) | (0.20, 1.00) | 0.95(0.10) | 0.99 | 98(20.5) | 0(0) |
AQoL-7D | (0, 1.00) | (0.44, 1.00) | 0.80(0.11) | 0.81 | 1(0.2) | 0(0) |
VFQ-UI | (0, 1.00) | (0.40, 0.94) | 0.83(0.10) | 0.88 | 0(0) | 0(0) |
NEI-VFQ-25 | (0, 100.00) | (20.23, 100.00) | 82.96(11.62) | 85.11 | 3(0.6) | 0(0) |