Table 2 Descriptive statistics of ODI, EQ-5D and SF-6D utility scores, n = 272
From: A head-to-head comparison of EQ-5D-5 L and SF-6D in Chinese patients with low back pain
ODI | EQ-5D-5 L | SF-6D | |
|---|---|---|---|
Mean | 33.1% | 0.603 | 0.593 |
Standard deviation | 0.210 | 0.336 | 0.143 |
Median | 28.9% | 0.702 | 0.567 |
Inter-quartile range | (17.8, 44.4%) | (0.438,0.862) | (0.500,0.656) |
Maximum | 98% | 1.000 | 0.960 |
Minimum | 0.0% | −0.390 | 0.320 |
Floor effect, N(%) | 3 (1.1%) | 3 (1.1%) | 4 (1.5%) |
Ceiling effect, N(%) | 0 (0%) | 1 (0.4%) | 0 (0%) |