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Descriptive statistics of ODI, EQ-5D and SF-6D utility scores, n = 272
| 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%) |
ODI Oswestry Disability Index, EQ-5D-5 L 5-level EuroQol 5-dimension, SF-6D Short Form 6-dimension
