Table 5.
Measure | Dichotomies of ODI health status† | N (%) | Mean ± SD | ES | RE | ROC curve | |
---|---|---|---|---|---|---|---|
AUC | 95% CI | ||||||
EQ-5D-5 L | 1 | 95 (35%) | 0.85 ± 0.13 | 0.42 | 1.48 | 0.89* | (0.85, 0.93) |
2–5 | 177 (65%) | 0.47 ± 0.34 | |||||
SF-6D | 1 | 95 (35%) | 0.7 ± 0.14 | 0.28 | 1 | 0.82* | (0.77, 0.87) |
2–5 | 177 (65%) | 0.54 ± 0.11 | |||||
EQ-5D-5 L | 1 and 2 | 193 (71%) | 0.76 ± 0.18 | 0.47 | 1.4 | 0.93* | (0.90, 0.97) |
3–5 | 79 (29%) | 0.22 ± 0.32 | |||||
SF-6D | 1 and 2 | 193 (71%) | 0.64 ± 0.13 | 0.33 | 1 | 0.87* | (0.82, 0.91) |
3–5 | 79 (29%) | 0.48 ± 0.1 | |||||
EQ-5D-5 L | 1–3 | 240 (88%) | 0.69 ± 0.24 | 0.27 | 1.33 | 0.97* | (0.94, 0.99) |
4 and 5 | 32 (12%) | −0.04 ± 0.25 | |||||
SF-6D | 1–3 | 240 (88%) | 0.61 ± 0.14 | 0.2 | 1 | 0.91* | (0.86, 0.95) |
4 and 5 | 32 (12%) | 0.43 ± 0.07 |
†1 to 5 represents different levels of low back pain measured by ODI from minimal disability to bedbound
*indicates that area under the ROC curve statistically significantly greater than 0.5 and that measure has discriminatory power (P < 0.001)
EQ-5D-5 L 5-level EuroQol 5-dimension, SF-6D Short Form 6-dimension, ODI Oswestry Disability Index, SD Standard deviations, ES Effect size, RE Relative efficiency, ROC Receiver Operating Characteristic, AUC Area Under Curve, CI Confidence Interval